VR Framerates

[C3PO]

Hi - any advice on improving VR frame-rates ... even in quiet MP servers on the ramp in Sinai in the cockpit only getting around 30fps with MR on. Here are my OpenVR settings. Any advice?

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[C3PO]

Running the MT .exe too of course with the command line thing in to run OpenXR

[TZeer]

Ingame settings?

[Burt]

Have you tried using the resolution override in the oxrtk maybe try setting it to 2800x2800 and use CAS for sharpening 20-40%. 

[C3PO]

Here are the in game settings. Also, DCS takes forever to start as well.

 

 

[DCoffey]

when I was using my RTX3060ti I noticed that setting the pc resolution to the lowest settings imrpoved my VR FPS, also I was running at 1.2 pixel density, is there a reason you are using .6?

[oz555]

You have clouds ultra and water high. This will kill FPS. 
 

I’m running a 4090 with clouds low and water medium. 30fps with re projection on a MP server is not so bad anyway. You could me making low 40’s and showing 30fps. 
 

Also cockpit global illumination should be off. 

Edited June 27, 2023 by oz555

[Qcumber]

You could also try setting your monitor resolution to the lowest possible. You don't need high res for this if you are using VR. 

[WipeUout]

Shadows to flat, heat blur off, Anis. Filtering off and bloom effect off.

Use FFR in OXRTK, this will give you a substantial gain without sacrificing resolution in your sweet spot.

Resolution in DCS option does not affect VR performance noticeably.  I did some testing on this and saw 0.1 ms drop using 800x600 which is within the margin of error.

[C3PO]

9 hours ago, WipeUout said:

Shadows to flat, heat blur off, Anis. Filtering off and bloom effect off.

Use FFR in OXRTK, this will give you a substantial gain without sacrificing resolution in your sweet spot.

Resolution in DCS option does not affect VR performance noticeably.  I did some testing on this and saw 0.1 ms drop using 800x600 which is within the margin of error.

Thank you - where is the setting for FFR?

Edited June 27, 2023 by C3PO

[WipeUout]

2 hours ago, C3PO said:

Thank you - where is the setting for FFR?

Open OXRTK at the first menu page "Performance" then select "preset" for "Fixed Foveated rendering", then select performance.  You can play with more settings if you select custom, you can define size of concentric rings and specific resolution for each of them.

[C3PO]

Thank you - had not been using OpenXR Toolkit but it is amazing! 

Huge performance increase - now running up to 80FPS in VR!!

[C3PO]

One further question: even though I am seeing highish frame rates from the mid-50s all the way up to 90 in clear, low congested areas, when FPS are around 50-60 there is considerable stuttering of the image when moving side to side in the cockpit. How can this be mitigated? Also there is quite a lot of shimmering visible - how to lessen? And finally, would a 4090 deliver much better frame rates or am I CPU-bound (even though it is still quite a strong CPU). And yes I am using MT.exe.