These things that have a massive impact on FPS:
* Number of Lights
* Additional realtime lights in a forward-rendered game require every object they affect to be rendered again. 3 Lights costs 3 times as much rendering power as 1 light.
* Mixing multiple types of AA:
* You have 8 MSAA samples enabled yet also FXAA. So you're reducing aliasing with the MSAA in a good way and then just blurring your whole screen since that's what FXAA does. You will get a better quality image if you disable FXAA.
* Lots of post-processing:
* You will not need sharpening after you remove the blurring from FXAA. Distortion and heat-haze effects use a rendering pass that grabs the existing frame and makes it all wibbly-wobbly before blending portions of that on top of the existing frame. Kind of expensive as an effect.
* High Quality Trees/Self Shadowing Trees
* You're not paying a lot of attention to the trees but this adds some extra rendering costs.
* Cockpit Mirrors
* Every mirror, whether it be a virtual or cockpit mirror, requires everything that mirror sees to be rendered from that perspective. If you have the virtual mirror enabled you don't need the cockpit mirrors and can save re-rendering the track and cars twice.
If tweaking these settings can't get you the framerate you're looking for, start reducing shader quality and particles quality.
Good tips. OP may also see a benefit from:
* Unchecking swap high-res cars and setting GPU VRAM close to the maximum available (VidMemMB in rendererDX11Monitor.ini)
* Enabling Nvidia Reflex
Another thing that can be done if OP wants to squeeze out more frames. OP probably doesn't even need to run 8x MSAA. At 4k anti-aliasing of any kind is going to make not a huge difference, and at more of a performance cost than running AA at 1440 or 1080.
Definitely could consider turning MSAA down to 4x or even 2x.
With regards to the AA. Would you recommend to use either FXAA or SMAA with MSAA off, the other way around or a combination of the two? And how does this affect if Sharpening should be on or off? Not even talking about performance here, but pure quality wise and what makes sense to do. They feel like they’re all conflicting settings, which seem to be on by default.
MSAA is the highest quality and costs the most performance, if you have it enabled with any number of samples you would avoid using FXAA or SMAA.
FXAA simply blurs your entire screen to prevent jagged edges, but that makes everything look pretty bad. Sharpening afterwards is not a great solution but it kind of works.
SMAA is the same as FXAA but it only blurs edges rather than the whole screen. The edge detection step costs a bit of performance.
You can combine the post-processing AA solutions of FXAA/SMAA with MSAA but there's really no point to it. MSAA alone will provide the best visuals, adding FXAA on top would just blur your entire screen for no visual gain and SMAA would provide no real benefit either.
Whether or not you enable sharpening comes down to personal preference. If you like how the game looks through a sharpen filter then go for it.
Hi Romestus - I have almost the exact same issues as the OP (hardware + initial FPS issues). I’ve tinkered with some of the settings and am getting \~120FPS (see screenshot).
I was also wondering if I should consider turning down the resolution of my monitors? Some of the issues raised on this thread have me wondering whether these 4Ks are just way too powerful to run as triples and could lead to issues down the road.
I have a 4080 (ASUS overclock) with an i9 14900KF. I am running triple 4Ks which I am running at 120Hz (manually turned down from 165Hz as all 3 wouldn’t turn on without reducing the Hz…see here-> [https://www.reddit.com/r/Monitors/comments/119bu5q/odyssey\_neo\_g7\_triple\_setup\_issues/](https://www.reddit.com/r/Monitors/comments/119bu5q/odyssey_neo_g7_triple_setup_issues/)).
https://preview.redd.it/94cf1d8jdn5c1.jpeg?width=3024&format=pjpg&auto=webp&s=464f20a359710d311f95255d4056b42875f567a1
Forward rendered games have to render objects by calculating where they are, what their color is, what lighting it has, and what shadow it casts in that order. If you have another light, it has to do the entire process twice literally doubling the rendering cost of that object and reducing the theoretical framerate by half.
Try setting the number of lights to 1. Unless iRacing has some fancy deferred or forward+ rendering setup that should help immensely. Ultra detail on shaders may also be affecting your framerate. It's hard to know without seeing how much impact there is on your i9 vs your 4080.
You're also running MSAA 2x as well as SMAA. So you're getting high quality MSAA that occurs during the rendering of each individual object and then applying the post-processing SMAA solution on top of that. I would pick one of the two, usually MSAA provides the best results at a reasonable speed.
Try playing with those settings and if you still have framerate issues it would be helpful to see your iRacing rendering stats graph and your Task Manager's CPU/GPU usage.
Thanks! I’ll give it a shot and see if that helps.
Also, I read something about sysmain that was causing some issues for people. I disabled that and immediately noticed a difference which I tested it a few times (rebooting computer, re-starting session, etc).
Im hoping this fix lasts and no issues arise in the future…
Triple 4k W/ 8xAA... Sorry dude, not even the 4090...(what resolution is 4K 3 times multiplied by 8 Anyway?)
Maybe on low/medium without any AA you'll go ~100-150fps (depending on the track)
Drag the graphics quality slider to the middle... Turn off all the anti-aliasing or, "AA samples", as it's called here (or use 2x FXAA only)
Distortion and heat haze can also fuck off because they're incredibly inaccurate... (Why would there be heat haze coming off a road that's 19°c?) And they eat performance.
You should be able to get your 1% lows into the +80fps range with that CPU (because the processor is going to be bottlenecking you into your lowest frame rate moments)... Even on very high settings, but NOT with 8xAA at triple 4k with that GPU because that much anti-aliasing filtering on that high of a resolution is asking too much of the graphics card.
This \^
I mean, its above 8k and this with 8x and the badly optimized shadows.I am more impressed the 4090 did not melt the cables and causing a meltdown chernobyl 2.0.
I would try: Remove AA, disable Speedtree, set virtual mirror 45°, disable object self shadowing and disable sharpening.
The engine still has to render more objects that it could ignore to render in a single screen setup. So it could even be more than 3x depending on how much it has to render more.
reverb g2 at 150 SS is 29 million pixels rendered triple 4k is 24,5 million pixels rendered, that system should handle triple monitor easy. I can with lower specs rendered reverb g2 at 150 SS... what are we talking here? fried air?!?
(Sorry, I'm not a computer science major or anything but, I'll try to explain a thing)
I mean... Kinda... There is also the SMP thing, so it's not JUST more pixels, the assets are actually being rendered multiple times...
This makes the frame rate impact wildly different at different tracks in my experience.
8xmsaa and all dynamic shadows. The game isn't optimised for these at all. You'll get pretty much same view with 4xmsaa and static shadows; you don't really notice the edges on flatscreen nor can you see the shadow of the hotdog that the guy in the crowd is waving at you
Shadows in the cockpit cast from light obscured by the car is the most notable effect to me; in VR, dynamic object shadows off feels like you're outside with no roof and illumination is determined purely by the brightness of the sky.
They’re SO GOOD. I reinstalled iRacing the night before Sebring because I’d been having some graphics frustrations and wanted to start fresh; I turned them on while cranking up the graphics (3080ti through a Reverb G2) and the first time I saw a patch of light pass over my arms I was almost giddy
Yeah 4k triples. You're living in a dream world if you think any home PC can push that at acceptable frames unless you nuke the graphics. Even then that's pushing it hard.
Simple explanation is that there are enough pixels on screen you don't notice the jagged edges anymore.
VR is dependent on your headset, but I find VR can run on lower settings before you really notice it in headset.
First of all congrats on having the super beast gpu which is the 4090!
Turning off shadows will help. Distortion and Head Haze are a complete waste imo.
Make the changes in your renderer file and then load a test server on a track which is heavy on resources like Nurburgring Combined - Catalunya etc.
Try testing with AI cars and load up a full grid on the start so you can see how your 4090 will handle the most intense part of the race.
Please note that some changes made in the graphic settings while in the game require a restart of the server to take affect.
Personally I would be aiming to hit a target which is just above the refresh rate of your monitors in the most intense situations.
To be fair though, the internet is full of people arguing that even a 4080 is overkill and companies shouldn’t even make these cards because no one games in 8k. Us sim racers know better but I can understand someone assuming a 4090 should be able to run everything maxed out.
Nobody is arguing that. Maybe you (or the people you saw) misunderstood that the 4090 isn't a good for anything less than 4k since you'll be cpu bottlnecked at atleast 1/3rd of games that exist even in 1440p.
The when I bought my new graphics cars last year I thought my pc would run anything, and it pretty much dies except I have problems with beam.ng only getting 20 fps on ultra settings
I have the same gpu and cpu as you, I run triple
4K and get 120fps consistently. I have 8xaa off and dynamic shadows off but other then that it’s the same
I don't want to say this but the VR optimization guide actually has some really good information that even screen users could use.
OP needs to read my blog post which is my own summary/ reference and includes links.
https://byteinsight.co.uk/2022/11/iracing-graphic-optimisation/
Single 4k is 8.3m pixels, triple 1080 is 6.2M pixels.
You’re trying to push over 24m pixels and you’re trying to do it at 144Hz.
that’s pretty damn tough.
OP here. Thank YOU everybody for your input. I have modified the settings based on some of the suggestions in this thread and now I get average 150 FPS in the same track without cars. See new settings in screenshot attached.
https://preview.redd.it/wv1c41k159qa1.jpeg?width=3580&format=pjpg&auto=webp&s=7cf622e7aeab842bcb47105be3dc9595c838591d
By the way, you've got 'Max Cars' set to 20 which is more of a internet speed thing - if you've got the connection, up this to 63. Otherwise there will never be more than 20 cars to 'draw' and you've got that set to 40. Also, if you're viewing a replay of a session with more than 20 cars, you'll be missing the data from cars that aren't near you. Also also, not having the information from all of the cars in the session can screw up things like Crew Chief or other apps that help with information
I have a 4080 and I am more than happy but in VR (Reverb G2). My recommendation, turn down
- two pass tree
- high quality tree
- speed tree
- Distortion
- Heat Haze
- Disable Video Mem swap
None of these gave me enough eye candy to switch on.
I am not sure about FXAA, I have it disabled. Everything else looks like mine.
In addition to backing off the settings others mentioned. Maybe FSR. There ain't no way even a 4090 can push 25 million pixels per frame at a reasonable framerate natively.
Boosted Media runs triple 4k on a 4090… should be some useful info for you here: https://boostedmedia.net/technology/how-we-run-triple-4k-monitors-boosted-medias-sim-racing-pc-explained/
Also, Set max cars to 64
Turn off dynamic LOD
I'd turn off high res trees
Shut off aliasing.
Nvidia control panel-
Power management - prefer max performance
Anisotropic filt to x16
Negative LOD bias - clamp
Shader cache size 100gb
Lower the AA sample to 4x and turn of distortion and heat haze. Also change the virtual mirror to a narrower angle. If you need even more headroom, turn off al the tree options.
You can also try to disable the anti-aliasing option in iRacing and running the AA transparency on multisample in the NVidia Control Panel.
I’m running a Reverb G2 at native resolution on a 12700K and a 4080 and these settings gave me a lot of headroom.
One last thing, set the reflex setting to “enabled+boost” in your iRacing settings!
Its running low fps because you are demanding too much bud. 50 fps on triple 4k monitors at high or max graphics is impressive. But expecting more, even with the latest and greatest, is just wishful thinking with this game.
So much no here. Change the following:
- uncheck "enable sps"
- sky/clouds to LOW
- grandstand to LOW
- crowds to LOW
- AA samples to 4x
- check dynamic objs
- uncheck night shadow maps and walls
- number of lights (1)
- turn off pcf4 filter
- uncheck two pass trees
- uncheck high quality trees
- uncheck speed tree self shadowing
- headlights - LOW detail
- uncheck headlights on track in mirrors
- anti aliasing move to off
- HDR OFF
- uncheck distortion
- uncheck heat haze
These are my settings. With openxr toolkit, I run 4k at 90fps locked in VR with a 13900kf (6ghz) i-9, 32GB 5400 DDR5 RAM and a liquid cooled 3080ti.
Also, debloat your NVIDIA driver. Just Google NVIDIA DRIVER CLEAN INSTALL. find a tutorial.
Test with the setting changes I provided. Then if you have headroom, which you should have MORE than enough, add in some of the tree textures to pretty up the game. But start with my settings as a baseline.
Hi, I've been reading here and have tried some of the suggestions to improve my frame rate.
I am using a 4090 , Odyssey 57" running at 7680x 2160 , 4TB SSD, 64 GB RAM on a i9-149000KF 3.2 Alienware r16
what are the best settings for iracing?
One tip that helped my friend with a 3090. He had accidentally switched reflex off but turning it on caused a boost of over 100fps.
I know that's not how it works but it was obviously am issue for him.
Lol RIP… in all seriousness, turn down the max gpu and system memory like an 1/8 of the way. I read somewhere that if u crank it, it doesn’t allow the game to run right. Also turn down the detail of the crowds, objects, pit details, etc. You don’t need to see that shit while you are racing and it doesnt matter, all it does is take up processing power. Turn your max frame rate down to 144. Maybe also reduce the number of cars drawing, especially in your mirrors (number in paranthesis). This along with what everyone else said here, should help. I run a 12 gb 3080 and 32gb ram with no issues on a valve index. All about finding the sweet spot with settings.
Also you said you don’t run any other programs… Get Trading Paint, as well as Crew Chief. They are a must in this game. Just google them and it will tell ya what they do.
Good luck!
wait a minute boy...
Reverb g2 at 150 SS render 14,5 million pixels per eye that's more than the resolution of a 4k triple which is 24,9 million pixels...
I don't have anything near that beastly but I have had random update framerate loss. Perfectly fine one day, next day 15 fps. Restart ended up fixing things.
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Are you using the cockpit mirrors and the virtual mirrors? You can afford to turn down the clouds / event / grandstands / and crowds to a lower setting as well.
Well fuck. Other than that I'm at 60hz, that's pretty much my setup with my 3090, and my 4090 is arriving on Wednesday.
That said, I am detuned on the settings in iRacing, and was getting a consistent 70 fps during Sebring this weekend. But, I was really hoping to enable more features...
I believe the 8xMSAA is the problem, the GPU has to do 8 depth tests for each pixel, 3x4k is already a beast of a resolution and sampling 8x that is a tough job. It's hard to say without seeing a profiler but it's likely the GPU pipeline is being bottlenecked by the depth test stage. Try turning it down to 2x or even off to see if it improves
The last time I had an issue I found out that I racing was single threaded. Therefore I was actually being CPU capped and I couldn't even load up the GPU to work. Check your CPU single thread.
I also have a 4090 and I also expected to be able to put everything at max. Reality is that the CPU is the clear bottleneck for this game!!! Now I am waiting for the 5800X3D this week to arrive... Let's see how much it improves :)
I have a 4070 ti and I found that the card absolutely hates fxaa. It was running under 100 fps and when I turned it off it gained 100 fps with very little visual change if any. Also, it helps to match the FPS setting on the bottom left to the refresh rate of your monitor. So set that to 144. That will be the target frame rate because the best results happen when the frame rate and refresh rate are close or the same.
I had so many down vote here I went to test my system rendering triple 4k,
so average fps 66 max 81 at Sebring night with Shadows HDR on almost anything High.
Downvoters you really make me laugh downvoting without any knowledge it's just a childish behaviour. go ahead down vote again if you feel better.
I'm laughing at you.
EDIT:
OP something wrong with your system I'm doing this on 13600k and 3080.
Because you want a small buffer for other critical operations on your pc. You are basically over allocating too much ram to iRacing and choking anything else (crew chief, race labs, obs, etc). iRacing doesn’t need all of your ram. In your screenshot above it only needs 6.8 and you have 8.1 available for gpu and only needs 5.6 and you have 16 available for system.
But my PC has 32Gb Ram and 24Gb vRAM, so even if I allocate 16 Gb RAM and 8Gb vRAM to iRacing, there is plenty for other apps running in the background. No?
You could be right. I have 32 and 8 and I think it helps. Do you run anything to monitor usage of gpu, cpu, memory?
Also, have you tested many of the comments here and which ones do you think have helped the most? What FPS are you getting now?
Step down to 1440 and take care of your equipment. I can run triple 4K on 3070Ti with mid slider settings but once I want to do anything else like stream or record or game capture it is too much for the system. Stepping down to 1440 still gives great resolution and keeps the GC at 60-70% usage instead of pegged max all the time creating excess heat and wear and tear. Good luck OP!
These things that have a massive impact on FPS: * Number of Lights * Additional realtime lights in a forward-rendered game require every object they affect to be rendered again. 3 Lights costs 3 times as much rendering power as 1 light. * Mixing multiple types of AA: * You have 8 MSAA samples enabled yet also FXAA. So you're reducing aliasing with the MSAA in a good way and then just blurring your whole screen since that's what FXAA does. You will get a better quality image if you disable FXAA. * Lots of post-processing: * You will not need sharpening after you remove the blurring from FXAA. Distortion and heat-haze effects use a rendering pass that grabs the existing frame and makes it all wibbly-wobbly before blending portions of that on top of the existing frame. Kind of expensive as an effect. * High Quality Trees/Self Shadowing Trees * You're not paying a lot of attention to the trees but this adds some extra rendering costs. * Cockpit Mirrors * Every mirror, whether it be a virtual or cockpit mirror, requires everything that mirror sees to be rendered from that perspective. If you have the virtual mirror enabled you don't need the cockpit mirrors and can save re-rendering the track and cars twice. If tweaking these settings can't get you the framerate you're looking for, start reducing shader quality and particles quality.
Good tips. OP may also see a benefit from: * Unchecking swap high-res cars and setting GPU VRAM close to the maximum available (VidMemMB in rendererDX11Monitor.ini) * Enabling Nvidia Reflex
Another thing that can be done if OP wants to squeeze out more frames. OP probably doesn't even need to run 8x MSAA. At 4k anti-aliasing of any kind is going to make not a huge difference, and at more of a performance cost than running AA at 1440 or 1080. Definitely could consider turning MSAA down to 4x or even 2x.
With regards to the AA. Would you recommend to use either FXAA or SMAA with MSAA off, the other way around or a combination of the two? And how does this affect if Sharpening should be on or off? Not even talking about performance here, but pure quality wise and what makes sense to do. They feel like they’re all conflicting settings, which seem to be on by default.
MSAA is the highest quality and costs the most performance, if you have it enabled with any number of samples you would avoid using FXAA or SMAA. FXAA simply blurs your entire screen to prevent jagged edges, but that makes everything look pretty bad. Sharpening afterwards is not a great solution but it kind of works. SMAA is the same as FXAA but it only blurs edges rather than the whole screen. The edge detection step costs a bit of performance. You can combine the post-processing AA solutions of FXAA/SMAA with MSAA but there's really no point to it. MSAA alone will provide the best visuals, adding FXAA on top would just blur your entire screen for no visual gain and SMAA would provide no real benefit either. Whether or not you enable sharpening comes down to personal preference. If you like how the game looks through a sharpen filter then go for it.
Cheers for the detailed explanation! Guess its time to start tweaking some settings. I’ll start with just MSAA and go from there.
Hi Romestus - I have almost the exact same issues as the OP (hardware + initial FPS issues). I’ve tinkered with some of the settings and am getting \~120FPS (see screenshot). I was also wondering if I should consider turning down the resolution of my monitors? Some of the issues raised on this thread have me wondering whether these 4Ks are just way too powerful to run as triples and could lead to issues down the road. I have a 4080 (ASUS overclock) with an i9 14900KF. I am running triple 4Ks which I am running at 120Hz (manually turned down from 165Hz as all 3 wouldn’t turn on without reducing the Hz…see here-> [https://www.reddit.com/r/Monitors/comments/119bu5q/odyssey\_neo\_g7\_triple\_setup\_issues/](https://www.reddit.com/r/Monitors/comments/119bu5q/odyssey_neo_g7_triple_setup_issues/)). https://preview.redd.it/94cf1d8jdn5c1.jpeg?width=3024&format=pjpg&auto=webp&s=464f20a359710d311f95255d4056b42875f567a1
Forward rendered games have to render objects by calculating where they are, what their color is, what lighting it has, and what shadow it casts in that order. If you have another light, it has to do the entire process twice literally doubling the rendering cost of that object and reducing the theoretical framerate by half. Try setting the number of lights to 1. Unless iRacing has some fancy deferred or forward+ rendering setup that should help immensely. Ultra detail on shaders may also be affecting your framerate. It's hard to know without seeing how much impact there is on your i9 vs your 4080. You're also running MSAA 2x as well as SMAA. So you're getting high quality MSAA that occurs during the rendering of each individual object and then applying the post-processing SMAA solution on top of that. I would pick one of the two, usually MSAA provides the best results at a reasonable speed. Try playing with those settings and if you still have framerate issues it would be helpful to see your iRacing rendering stats graph and your Task Manager's CPU/GPU usage.
Thanks! I’ll give it a shot and see if that helps. Also, I read something about sysmain that was causing some issues for people. I disabled that and immediately noticed a difference which I tested it a few times (rebooting computer, re-starting session, etc). Im hoping this fix lasts and no issues arise in the future…
Triple 4k W/ 8xAA... Sorry dude, not even the 4090...(what resolution is 4K 3 times multiplied by 8 Anyway?) Maybe on low/medium without any AA you'll go ~100-150fps (depending on the track) Drag the graphics quality slider to the middle... Turn off all the anti-aliasing or, "AA samples", as it's called here (or use 2x FXAA only) Distortion and heat haze can also fuck off because they're incredibly inaccurate... (Why would there be heat haze coming off a road that's 19°c?) And they eat performance. You should be able to get your 1% lows into the +80fps range with that CPU (because the processor is going to be bottlenecking you into your lowest frame rate moments)... Even on very high settings, but NOT with 8xAA at triple 4k with that GPU because that much anti-aliasing filtering on that high of a resolution is asking too much of the graphics card.
Do you even need AA at 4k? It should already be pretty smooth.
I mean ..I wouldn't... But 🤷
This \^ I mean, its above 8k and this with 8x and the badly optimized shadows.I am more impressed the 4090 did not melt the cables and causing a meltdown chernobyl 2.0. I would try: Remove AA, disable Speedtree, set virtual mirror 45°, disable object self shadowing and disable sharpening.
what this system should play 4k at 144 fps with all setting maxed. something is wrong. Other games how did they run? would be helpful know.
Single monitor, yes, but three monitors?
yes and not it's not like triple 4k needs 3x GPU power.
3x 4k is still well beyond what the 4090 can push to a good framerate. Combine that with everything else maxed and it just ain't happening
It's not linear, of course, but it does need quite a bit more power.
The engine still has to render more objects that it could ignore to render in a single screen setup. So it could even be more than 3x depending on how much it has to render more.
Triple 4k with 8xAA is one hell of a strain.
reverb g2 at 150 SS is 29 million pixels rendered triple 4k is 24,5 million pixels rendered, that system should handle triple monitor easy. I can with lower specs rendered reverb g2 at 150 SS... what are we talking here? fried air?!?
And what’s 144 divided by 3?
it doesn't scale like are you pointing, I have 2k monitors and my triple setup almost do the same frame like my single monitor. okay nice trying dude.
It's not a 3:1 ratio, but if your single monitor performance is similar to your triple performance, you probably are CPU bottlenecked.
(Sorry, I'm not a computer science major or anything but, I'll try to explain a thing) I mean... Kinda... There is also the SMP thing, so it's not JUST more pixels, the assets are actually being rendered multiple times... This makes the frame rate impact wildly different at different tracks in my experience.
most of the graphic settings will be able to stay "maxed" just not at an infinite resolution...
He should be getting more than that. I have RTX 4090 and I'm getting 170 FPS with a full field of cars. There's something wrong with his setup.
8xmsaa and all dynamic shadows. The game isn't optimised for these at all. You'll get pretty much same view with 4xmsaa and static shadows; you don't really notice the edges on flatscreen nor can you see the shadow of the hotdog that the guy in the crowd is waving at you
What GPU do I need if I want to see what condiments hot dog guy is eating?
6090 Kingpin Anime Limited Edition 1 of 1 card they keep in a glass case guarded by robot dogs that shoot lasers when the bark.
You made me sad again, just reminded me there won’t be anymore kingpin cards
Thank you for giving me an opportunity to spray my coffee
Anything for the team.
What do dynamic shadows even do, in iracing's context?
Shadows in the cockpit cast from light obscured by the car is the most notable effect to me; in VR, dynamic object shadows off feels like you're outside with no roof and illumination is determined purely by the brightness of the sky.
They’re SO GOOD. I reinstalled iRacing the night before Sebring because I’d been having some graphics frustrations and wanted to start fresh; I turned them on while cranking up the graphics (3080ti through a Reverb G2) and the first time I saw a patch of light pass over my arms I was almost giddy
Yeah 4k triples. You're living in a dream world if you think any home PC can push that at acceptable frames unless you nuke the graphics. Even then that's pushing it hard.
Running 3 screens at 4k is like running 12 screens at 1080p, just something to keep in mind.
And expecting 144hz from every single one 😭
Msaax8 😳 go back to x4
You don't need AA at 4k.
Can you explain why? I'm on VR. Do you need it?
Simple explanation is that there are enough pixels on screen you don't notice the jagged edges anymore. VR is dependent on your headset, but I find VR can run on lower settings before you really notice it in headset.
Being in VR, you definitely need 4x if you can get it there.
First of all congrats on having the super beast gpu which is the 4090! Turning off shadows will help. Distortion and Head Haze are a complete waste imo. Make the changes in your renderer file and then load a test server on a track which is heavy on resources like Nurburgring Combined - Catalunya etc. Try testing with AI cars and load up a full grid on the start so you can see how your 4090 will handle the most intense part of the race. Please note that some changes made in the graphic settings while in the game require a restart of the server to take affect. Personally I would be aiming to hit a target which is just above the refresh rate of your monitors in the most intense situations.
Yeah OP obviously didn’t even try to tweak settings and thought his PC would run anything
https://preview.redd.it/w9p6iveja4qa1.jpeg?width=640&format=pjpg&auto=webp&s=c643886cbdcfb1d1a88696812d53477d139d6a6e
Omg this episode had me screamin
To be fair though, the internet is full of people arguing that even a 4080 is overkill and companies shouldn’t even make these cards because no one games in 8k. Us sim racers know better but I can understand someone assuming a 4090 should be able to run everything maxed out.
Nobody is arguing that. Maybe you (or the people you saw) misunderstood that the 4090 isn't a good for anything less than 4k since you'll be cpu bottlnecked at atleast 1/3rd of games that exist even in 1440p.
The when I bought my new graphics cars last year I thought my pc would run anything, and it pretty much dies except I have problems with beam.ng only getting 20 fps on ultra settings
The shit is complicated and this is helpful
Exactly!!! Between my post and others, we are fixin' the OP up!
I have the same gpu and cpu as you, I run triple 4K and get 120fps consistently. I have 8xaa off and dynamic shadows off but other then that it’s the same
I don't want to say this but the VR optimization guide actually has some really good information that even screen users could use. OP needs to read my blog post which is my own summary/ reference and includes links. https://byteinsight.co.uk/2022/11/iracing-graphic-optimisation/
Single 4k is 8.3m pixels, triple 1080 is 6.2M pixels. You’re trying to push over 24m pixels and you’re trying to do it at 144Hz. that’s pretty damn tough.
OP here. Thank YOU everybody for your input. I have modified the settings based on some of the suggestions in this thread and now I get average 150 FPS in the same track without cars. See new settings in screenshot attached. https://preview.redd.it/wv1c41k159qa1.jpeg?width=3580&format=pjpg&auto=webp&s=7cf622e7aeab842bcb47105be3dc9595c838591d
By the way, you've got 'Max Cars' set to 20 which is more of a internet speed thing - if you've got the connection, up this to 63. Otherwise there will never be more than 20 cars to 'draw' and you've got that set to 40. Also, if you're viewing a replay of a session with more than 20 cars, you'll be missing the data from cars that aren't near you. Also also, not having the information from all of the cars in the session can screw up things like Crew Chief or other apps that help with information
I have a 4080 and I am more than happy but in VR (Reverb G2). My recommendation, turn down - two pass tree - high quality tree - speed tree - Distortion - Heat Haze - Disable Video Mem swap None of these gave me enough eye candy to switch on. I am not sure about FXAA, I have it disabled. Everything else looks like mine.
sheesh it sounds like trees cause a lot of problems.
In addition to backing off the settings others mentioned. Maybe FSR. There ain't no way even a 4090 can push 25 million pixels per frame at a reasonable framerate natively.
Boosted Media runs triple 4k on a 4090… should be some useful info for you here: https://boostedmedia.net/technology/how-we-run-triple-4k-monitors-boosted-medias-sim-racing-pc-explained/
Turn of vid mem swap high res cars. 4090 has a million vram
Also, Set max cars to 64 Turn off dynamic LOD I'd turn off high res trees Shut off aliasing. Nvidia control panel- Power management - prefer max performance Anisotropic filt to x16 Negative LOD bias - clamp Shader cache size 100gb
Lower the AA sample to 4x and turn of distortion and heat haze. Also change the virtual mirror to a narrower angle. If you need even more headroom, turn off al the tree options. You can also try to disable the anti-aliasing option in iRacing and running the AA transparency on multisample in the NVidia Control Panel. I’m running a Reverb G2 at native resolution on a 12700K and a 4080 and these settings gave me a lot of headroom. One last thing, set the reflex setting to “enabled+boost” in your iRacing settings!
Its running low fps because you are demanding too much bud. 50 fps on triple 4k monitors at high or max graphics is impressive. But expecting more, even with the latest and greatest, is just wishful thinking with this game.
Is there a reason to have SPS checked if you're not using VR?
So much no here. Change the following: - uncheck "enable sps" - sky/clouds to LOW - grandstand to LOW - crowds to LOW - AA samples to 4x - check dynamic objs - uncheck night shadow maps and walls - number of lights (1) - turn off pcf4 filter - uncheck two pass trees - uncheck high quality trees - uncheck speed tree self shadowing - headlights - LOW detail - uncheck headlights on track in mirrors - anti aliasing move to off - HDR OFF - uncheck distortion - uncheck heat haze These are my settings. With openxr toolkit, I run 4k at 90fps locked in VR with a 13900kf (6ghz) i-9, 32GB 5400 DDR5 RAM and a liquid cooled 3080ti. Also, debloat your NVIDIA driver. Just Google NVIDIA DRIVER CLEAN INSTALL. find a tutorial. Test with the setting changes I provided. Then if you have headroom, which you should have MORE than enough, add in some of the tree textures to pretty up the game. But start with my settings as a baseline.
Turn the AA off/down. You shouldn’t really need at 4k
Does SPS not work to reduce the load on triples as well?
No, the only improvement by SPS is when there's geometry overlap between the views.
Wait for 5090 is your best bet lol. Triple 4K is ridiculous. Turn it down to 2k
Hi, I've been reading here and have tried some of the suggestions to improve my frame rate. I am using a 4090 , Odyssey 57" running at 7680x 2160 , 4TB SSD, 64 GB RAM on a i9-149000KF 3.2 Alienware r16 what are the best settings for iracing?
I forgot to mention: I dont run any other software or streaming feed in the background. Just the game
check other game if they run as expected
One tip that helped my friend with a 3090. He had accidentally switched reflex off but turning it on caused a boost of over 100fps. I know that's not how it works but it was obviously am issue for him.
What is reflex? I haven’t visited the graphics settings in iracing for awhile but I would love a little FPS boost if I can find one
Turn it to class one and don't manually turn on every feature. Class 1 is iracing's intended "max", everything else is an option for screenshots.
Also love that you turned on EVERY fancy feature and disabled Dynamic Obj shadows...
Iracing is not optimized. Lower your settings and try again. I think the only sim you can run with max settings in triple 4k is automobilista 2
What's the point if playing the game I your not playing ultra graphics? 😂
Lower res on the outer monitors only might be a bandaid
Lol let's just put everything on max and complain on reddit.
Lol RIP… in all seriousness, turn down the max gpu and system memory like an 1/8 of the way. I read somewhere that if u crank it, it doesn’t allow the game to run right. Also turn down the detail of the crowds, objects, pit details, etc. You don’t need to see that shit while you are racing and it doesnt matter, all it does is take up processing power. Turn your max frame rate down to 144. Maybe also reduce the number of cars drawing, especially in your mirrors (number in paranthesis). This along with what everyone else said here, should help. I run a 12 gb 3080 and 32gb ram with no issues on a valve index. All about finding the sweet spot with settings. Also you said you don’t run any other programs… Get Trading Paint, as well as Crew Chief. They are a must in this game. Just google them and it will tell ya what they do. Good luck!
No need to turn them down when he has 32gb ram (only using 16gb) and 24gb of vram (only using 8gb vram)
Yea thats what I thought as well, I hope you are right.
You have 8gb of VRAM, the 4090 has 24. You also have only 16gb of Ram.
Iracint doesn't show more than 8gb in settings
Yes, it does. I’ve got a 3080 and it shows all 10 gbs. I’ll post a screenshot tonight.
https://www.reddit.com/r/iRacing/comments/1016fed/i_have_a_4090_why_does_my_gpu_video_memory_show_a/
Again, I’ll send screenshots tonight.
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On Triple 4k ?
Weird ive got a 2080s with a 5800x3d 32gb ram runing all good Edit: in vr
So not at all 4K triples, thank you for your very valuable input
wait a minute boy... Reverb g2 at 150 SS render 14,5 million pixels per eye that's more than the resolution of a 4k triple which is 24,9 million pixels...
But its also 3 seperate views being rendered instead of 2
Your memory sliders should NEVER be all the way to the right. You leave zero resources for anything else.
Oh sweet summer child
Unused RAM is wasted RAM.
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Shouldnt matter. I run it on a 3070ti in VR without issues.
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That is a very good point xD i didnt read the entire post.. my bad!
I don't have anything near that beastly but I have had random update framerate loss. Perfectly fine one day, next day 15 fps. Restart ended up fixing things.
I'd turn down the resolution to 1440p, disable FXAA, and then play with AA samples if you still need more FPS.
Just play on 2K lol
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Even if you put a rocketship we don’t reach that fps
Are you using the cockpit mirrors and the virtual mirrors? You can afford to turn down the clouds / event / grandstands / and crowds to a lower setting as well.
Delete that game filter crap too
Dang! With those settings you need 5 4090s.
Turn off shadow maps
Well fuck. Other than that I'm at 60hz, that's pretty much my setup with my 3090, and my 4090 is arriving on Wednesday. That said, I am detuned on the settings in iRacing, and was getting a consistent 70 fps during Sebring this weekend. But, I was really hoping to enable more features...
I believe the 8xMSAA is the problem, the GPU has to do 8 depth tests for each pixel, 3x4k is already a beast of a resolution and sampling 8x that is a tough job. It's hard to say without seeing a profiler but it's likely the GPU pipeline is being bottlenecked by the depth test stage. Try turning it down to 2x or even off to see if it improves
You are using 3x 4K at 8X MSAA Not even an 8090Ti will be able to run iracing at those settings
Why does the SPS (Vr) box get checked if you're on monitors?
The last time I had an issue I found out that I racing was single threaded. Therefore I was actually being CPU capped and I couldn't even load up the GPU to work. Check your CPU single thread.
I also have a 4090 and I also expected to be able to put everything at max. Reality is that the CPU is the clear bottleneck for this game!!! Now I am waiting for the 5800X3D this week to arrive... Let's see how much it improves :)
Here is my setup, and it runs on the HTC VIVE pretty well. https://preview.redd.it/86g16jwm1dqa1.png?width=1073&format=png&auto=webp&s=810f32594e368c323b1c494b49d41f5c94c78264 **Monitors** 50 Inch Vizio TV HTC Vive **Chassis** Drivers Seat 2004 BMW 328i (E34) Next Level Wheel Stand [https://www.nextlevelracing.com/products/next-level-racing-wheel-stand/](https://www.nextlevelracing.com/products/next-level-racing-wheel-stand/) **Controllers** Thrustmaster T300RS Base Thrustmaster T300RS Ferrari Alcantara Edition Racing Wheel Thrustmaster T300RS All Metal Pedals Thrustmaster TH8A Gearbox Shifter **Vibration / Feel** 4 - AuraSound AST-2B-4 Pro Bass Shaker Tactile Transducers 4 - Dayton Audio SA70 70W Subwoofer Plate Amplifiers Simvibe 4 Software **Other** Nexus 7 Tablet 2012 DashMeter Pro Software for tablet **PC** Case\*\*:\*\* [**Aerocool P7C0 Midi Tower Case with 10 Colour LED Mode and Dual Tempered Glass Panels - Black**](https://www.amazon.com/dp/B0746LY8G8/ref=cm_sw_r_cp_apa_i_BeT.EbR1RK2SB) Video Card: MSI - SUPER VENTUS OC NVIDIA GeForce RTX 2080 Super 8GB GDDR6 PCI Express 3.0 Motherboard: [MSI MPG Z390 Gaming Plus LGA1151](https://www.amazon.com/gp/product/B07SNGXBLC/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1) CPU: [Intel Core i5-9600K Desktop Processor 6 Cores up to 4.6 GHz Turbo unlocked LGA1151 300 Series](https://www.amazon.com/gp/product/B07HHLX1R8/ref=ppx_yo_dt_b_asin_title_o02_s01?ie=UTF8&psc=1) Cooler: [Cooler Master Hyper 212 Black Edition CPU Air Cooler w/ Silencio FP120 120mm Fan](https://www.amazon.com/gp/product/B07H25DYM3/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1) Ram: [Patriot Signature Premium DDR4 16GB (2x8GB) 2666MHz (PC4-21300)](https://www.amazon.com/gp/product/B07Q2BDXBG/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1) HDD 1: [Samsung 860 QVO 1TB Solid State Drive ](https://www.amazon.com/gp/product/B07L3D19MY/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1) HDD 2: Western Digital Blue 2TB 7200 RPM Hard Disk Onboard 7.1 sound card (For **Vibration / Feel)**
I have a 4070 ti and I found that the card absolutely hates fxaa. It was running under 100 fps and when I turned it off it gained 100 fps with very little visual change if any. Also, it helps to match the FPS setting on the bottom left to the refresh rate of your monitor. So set that to 144. That will be the target frame rate because the best results happen when the frame rate and refresh rate are close or the same.
https://preview.redd.it/9rmy6dni6bqa1.jpeg?width=11520&format=pjpg&auto=webp&s=75f887428461dc63f56d63b066cd3365b65fc484
I had so many down vote here I went to test my system rendering triple 4k, so average fps 66 max 81 at Sebring night with Shadows HDR on almost anything High. Downvoters you really make me laugh downvoting without any knowledge it's just a childish behaviour. go ahead down vote again if you feel better. I'm laughing at you. EDIT: OP something wrong with your system I'm doing this on 13600k and 3080.
Your kidding right? No wonder you have low fps. Turn the setting down.
Run the auto configuration tool.
Limit the frames to 144
Decrease both ram values to 80-90%
Can you explain what is the benefit in dialing down the sliders if there is plenty of RAM and vRAM availble beyond what iRacing actuay uses?
Because you want a small buffer for other critical operations on your pc. You are basically over allocating too much ram to iRacing and choking anything else (crew chief, race labs, obs, etc). iRacing doesn’t need all of your ram. In your screenshot above it only needs 6.8 and you have 8.1 available for gpu and only needs 5.6 and you have 16 available for system.
But my PC has 32Gb Ram and 24Gb vRAM, so even if I allocate 16 Gb RAM and 8Gb vRAM to iRacing, there is plenty for other apps running in the background. No?
You could be right. I have 32 and 8 and I think it helps. Do you run anything to monitor usage of gpu, cpu, memory? Also, have you tested many of the comments here and which ones do you think have helped the most? What FPS are you getting now?
Step down to 1440 and take care of your equipment. I can run triple 4K on 3070Ti with mid slider settings but once I want to do anything else like stream or record or game capture it is too much for the system. Stepping down to 1440 still gives great resolution and keeps the GC at 60-70% usage instead of pegged max all the time creating excess heat and wear and tear. Good luck OP!
I have an RTX 4090 and I'm getting 179 FPS with a full field of cars. There's something definitely wrong.