VR Optimizations

[Cr0ss]

I've seen some bad optimizations for VR modes in and outside of simracing titles but this one by far is the worst one I've had experience with. even on a i7-9700 and RTX 2070 I fail to get a stable and playable framerate on any settings that don't make the whole experience a blurry, sick inducing mess. Even on low as possible settings trying to ramp the supersampling up to an acceptable amount, the game will just struggle to do any more than 40 FPS

This is honestly shameful that this is paired with the fact that the non-VR mode is optimized quite well

[Dee]

it is quite terrible indeed. if you want, there are some good pointers and ideas here: https://blog.lynxsec.se/acc-vr-the-definitive-vr-performance-guide-updated-for-1-8

the openvr fsr 'mod' is quite good imo.

[Freeminer]

As Dee says - the open fsr mod is worth trying - it totally transformed the game in VR for me - I now get 90fps with good graphics and the game also runs really well in 45fps projection which is probably the best bet for your 2070 - the mod gained me about 20fps.

Don't bother with DLSS or FSR in the in-game settings for FPS improvements as they really don't help much for VR - just use the mod and other advisory settings in the guide.

[Euto]

Do yourself a favour and play Assetto Corsa in VR instead. Even the Open FSR mod just doesn't help much. When you see how good the old Assetto Corsa looks in comparison in VR, you don't want to play ACC anymore, not even in 90 FPS.

That's exactly what I went through.
I play my racing games in VR. It doesn't help that ACC is probably the prettiest in 2D. In VR it's just crap, even in 90 FPS and with a 3080.

All in all, it's a shame. Because I would like to have the ACC physics and the tyres etc. But it just doesn't work like that. That's why I'll probably be very careful with AC2 and probably only buy it much later when others have already tested it in VR.
I think AC will always be the benchmark for me.

[Mad Marty]

I would look into the OpenXR mod for ACC, removes the need for steamVR, I run a 3080 with my ReverbG2 and can honestly say prior to this ACC was awful in VR, now I can run a full grid on Donington park in the rain and get a really smooth, sharp image. There's a thread on the official ACC VR forum. Straight forward to install and get running if you don't mind tinkering.

[Euto]

what is this OpenXR mod for ACC? i will have a look at it. Thank you!
But I will compare it again with AC as always. Because I spent many many hours trying to get ACC to work until I was happy with it.
Then saw AC again and immediately understood that I was only satisfied with the best possible rubbish. AND yes, I used the FSR mod for quite a long time for most of my VR games.

[Euto]

I have looked at this openxr mod and it does indeed help.
I think the mod is better than the fsr mod.
Unfortunately, it doesn't change the fact that AC just runs 100 times better.
It's just a real shame.
Do the test yourself.
Start AC after you have been in ACC.
You don't even have to have the free content manager and the shaders it contains.

[Mad Marty]

I have, the OpenXR mod doesn't give you as much of a performance boost in AC as it does in ACC but does give clearer visuals, That being said, being able to race in ACC in VR and a full grid online and it still look good is a massive bonus to me. I find AC a good all round sim, but ACC pips it for me online now.

[Euto]

ACC is the game I would prefer if only it ran as clearly and naturally as AC.
The sound... the racing feeling, of course, ACC is better here.
In VR... AC just runs much much better.... sure... it's older and so on... but the difference is way too big.
I agree that the mod makes it better, but AC just looks so much better in VR.

[Jason Bradshaw]

ACC is disgraceful compared to AMS2 in VR terms and it doesn't look like ACC have any plans to optimise which is ridiculous.

[lokiss88]

Give the OpenXR mod a try. It holds up close to AMS in terms of looks after applying the latest Eng file. Mostly holds around 70/80/90 frames depending on the track and numbers on the server.

This is on the G2 with a 3090. I get it though, anything less than 2k per eye native with an upscale the U4 engine VR games look arse... i do have an Index, it's night and day compared to the G2 on U4 games... not so much other engines.

[Wylie28]

Its optimized just fine. The game just has very high graphical/physics fidelity. You aren't going to get magically high performance with a very high fidelity game. Math can't be cheated. Something that takes more computations WILL TAKE LONGER. Thats the rules of the world. Optimization is simply finding the minimum time. And they aren't that far off.

Optimization is a ratio, not an absolute. You realize that right? I feel like no "bad optimization post" I see on game forums even knows what optimization is. The FPS you get is irrelevant. Its a ratio.

But it does sound like something is wrong. I play on medium/high on my 3060ti and get my 80fps target with ease. Are you doing that thing where you lower the games resolution to like 40%?

Don't do that. Don't do what the guides say. Play at 100% render scale. Anyone that tells you to lower the resolution scale is a moron.

[Euto]

You get just 60FPS and find the game ok? Which headset do you have?
Well, I couldn't imagine playing with only 60fps with my G2.
Sure, if you have a headset that doesn't need such a high resolution, then maybe 60FPS and a 3060 would be enough, but then I wouldn't touch ACC anymore, I'd just stick to AC.

[Matty-S]

Originally posted by Cr0ss:

I've seen some bad optimizations for VR modes in and outside of simracing titles but this one by far is the worst one I've had experience with. even on a i7-9700 and RTX 2070 I fail to get a stable and playable framerate on any settings that don't make the whole experience a blurry, sick inducing mess. Even on low as possible settings trying to ramp the supersampling up to an acceptable amount, the game will just struggle to do any more than 40 FPS

This is honestly shameful that this is paired with the fact that the non-VR mode is optimized quite well

Its not Assetto optimisation at all, its your hardware and settings. Dont blame the game for your PC shortcomings.
Open XR did nothing for my framerates. (5800x, 6900xt and G2). Steady at 60 to 80 fps depending on tracks, players etc

Edit: Wrong cpu specs

[Euto]

Originally posted by Matty-S:

Originally posted by Cr0ss:

I've seen some bad optimizations for VR modes in and outside of simracing titles but this one by far is the worst one I've had experience with. even on a i7-9700 and RTX 2070 I fail to get a stable and playable framerate on any settings that don't make the whole experience a blurry, sick inducing mess. Even on low as possible settings trying to ramp the supersampling up to an acceptable amount, the game will just struggle to do any more than 40 FPS

This is honestly shameful that this is paired with the fact that the non-VR mode is optimized quite well

Its not Assetto optimisation at all, its your hardware and settings. Dont blame the game for your PC shortcomings.
Open XR did nothing for my framerates. (3800x, 6900xt and G2). Steady at 60 to 80 fps depending on tracks, players etc

I wouldn't touch ACC in VR with those pc stats.
But of course that's just a personal view. I just wouldn't have any fun that way.
ACC is an Unreal engine and it simply needs a better CPU.
And unfortunately,... really unfortunately, AMD GPUs are not really competitive with nvidia GPUs in VR. Especially with regard to the Reverb G2.
There are no normal benchmarks for this, but a community like the one from IL2 has created long comparison lists.
One rule of thumb is how a GPU performs at 4K. If the 1% perf is too small, then the G2 will simply not perform well with the GPU.

[Matty-S]

Originally posted by Euto:

Originally posted by Matty-S:

Its not Assetto optimisation at all, its your hardware and settings. Dont blame the game for your PC shortcomings.
Open XR did nothing for my framerates. (3800x, 6900xt and G2). Steady at 60 to 80 fps depending on tracks, players etc

I wouldn't touch ACC in VR with those pc stats.
But of course that's just a personal view. I just wouldn't have any fun that way.
ACC is an Unreal engine and it simply needs a better CPU.
And unfortunately,... really unfortunately, AMD GPUs are not really competitive with nvidia GPUs in VR. Especially with regard to the Reverb G2.
There are no normal benchmarks for this, but a community like the one from IL2 has created long comparison lists.
One rule of thumb is how a GPU performs at 4K. If the 1% perf is too small, then the G2 will simply not perform well with the GPU.

5800x i meant.....Not 3800. This is running at 145% O/s as well.