What FPS should I be hitting in VR?

[Opiate]

Hello! 

I've been playing around with the settings and have found the most efficient I can get is just above 70fps. That's with balanced graphics, high clouds, 4x fxaa, sharpen, 70km horizontal draw, 50km distance (I've also set the frame count to 3 in the nvidia panel).

I say efficient because if I turn everything off with low GRAPHICS, I'm ONLY average just under 75fps.

 

Are there any other changes I can make software wise to improve fps? What are most people getting? 

 

Hardware:

Valve Index, RTX 3080 FE, i5 9600K, 16GB DDR4 and NVME SSD. 

 

Now I'm assuming my CPU might be the bottleneck so I'm also wondering what a sensible upgrade would be and how much of an increase in fps I can expect from it? 

 

Thanks in advance! 

[DBCOOPER011]

Are you using OpenXR? I have a Valve Index and reverb G2. OpenXR helps out a lot with the G2, haven't tried it with the index yet though. I would try it if possible though.

 

Regarding the CPU bottleneck, I would recommend the 13th series Intel processors or the new AMD V-cache ones coming out soon. I was getting 90fps pretty consistent with my 12900K and 13700K with my 3090 with most everything maxed at MSAA 0. Increasing it would bring the fps down substantially. I left everything in the NV control panel to default except the power management to max. This was with the G2 in openxr...

 

Edited January 10, 2023 by DBCOOPER011

[Opiate]

interesting, i've not heard of openXR. Does it replace steamVR? How does one use it exactly?

Yes I found MSAA 0 and MSAA 2 or 4 only had about a 1-2 fps difference, so I'm assuming there's a bottleneck somwhere. MSAA 8 however was the only thing that gave me a sub 60fps performance hit.

 

[DBCOOPER011]

3 hours ago, Opiate said:

interesting, i've not heard of openXR. Does it replace steamVR? How does one use it exactly?

Yes I found MSAA 0 and MSAA 2 or 4 only had about a 1-2 fps difference, so I'm assuming there's a bottleneck somwhere. MSAA 8 however was the only thing that gave me a sub 60fps performance hit.

 

 

I think I was mistaken. It doesn't appear that openxr would be beneficial with the index, as steamvr is native to the index. With a 3080, I would assume the bottleneck is with your cpu.

[TheSNAFU]

I don’t have an index but have you tried reducing super sampling in steam vr? If you reduce it to say 75% you should pick up considerable fps without losing too much visual quality. As an example I have the g2 on a 9700k running at 5.1 ghz and a 3080 ftw.  With resolution set at 75% of the g2 resolution I get a steady 90 fps other than very occasionally when over a city or airfield with lots of ground and air ai in the area. Game settings mostly high including preset. You can also try reducing ai load on the cpu since the game doesn’t efficiently use the cpu. As far as I know the index does work with Openxr. You could try switching to Openxr which allows you to run at a lower resolution and that upscales that to a higher resolution. The cost of that is lower visual quality. There are threads here that instruct on how to set it up. 
 

These are the things that come to mind.

Edited January 10, 2023 by TheSNAFU

[chiliwili69]

8 hours ago, Opiate said:

Yes I found MSAA 0 and MSAA 2 or 4 only had about a 1-2 fps difference, so I'm assuming there's a bottleneck somwhere

 

You are right, the bottleneck is elsewhere. A 3080 is quite more than enough for the Index. I assume you run it at 80Hz, right?

 

Most likely the bottleneck is in your CPU/RAM or a hidden issue.

 

First, you can try to lower the IL-2 settings which load more the CPU/RAM. You can find them here. (consider it is only an indication since IL-2 engine has change substantially since then).

 

Secondly, you can benchmark your system with any public benchmark liek Userbenchmark, or Passmark, or simply CPU-Z bench. Just to be sure no hidden issues.

 

And if you have time, you can run the SYN_Vander IL-2 benchmark and compare with your peers.

Edited January 10, 2023 by chiliwili69

[Opiate]

3 hours ago, chiliwili69 said:

 

You are right, the bottleneck is elsewhere. A 3080 is quite more than enough for the Index. I assume you run it at 80Hz, right?

Actually I have it set to 144hz from way back when I played half life alyx as it helped with nausea. Is that what's the problem? 

[chiliwili69]

9 hours ago, Opiate said:

Actually I have it set to 144hz from way back when I played half life alyx as it helped with nausea. Is that what's the problem?

With Alyx you have more chances to reach 144fps since the game is less demanding on CPU and GPU.

 

With IL-2 there is no CPU in the market that can reach 144Hz with good IL-2 settings.

 

You can do one of the  two things:

 

- Put 80Hz mode (or 90Hz), not use "Motion Smoothing" in SteamVR and set IL-2 settings to be at 80fps

or

- Put 120Hz (or 144Hz), and use "motion Smoothing" in SteamVR and set IL-2 settings to be at 120 fps (60 of them are generated synthetically, so the load to the CPU is like running at 60fps)

[Opiate]

Interesting! Il try both

[Opiate]

On 1/11/2023 at 9:13 AM, chiliwili69 said:

 

- Put 120Hz (or 144Hz), and use "motion Smoothing" in SteamVR and set IL-2 settings to be at 120 fps (60 of them are generated synthetically, so the load to the CPU is like running at 60fps)

So I had it on 144hz with smoothing on the whole time prior when I was hitting 75fps on minimal settings, how would I get Il2 settings to hit 120fps without an upgrade for this method? 

[chiliwili69]

7 hours ago, Opiate said:

So I had it on 144hz with smoothing on the whole time prior when I was hitting 75fps on minimal settings,

This is a bot strange.

 

If you had 144Hz refresh rate with Motion Smoothing ON, and with the lowest IL-2 settings you should be at 144fps (only 72 are really computed).

 

Just take any plane, flight to 8000 meters, at look up to the sky. You should reach 144fps , otherwise something strange is happening.

 

Run the benchmarks to be sure everything is fine.