VR Performance Tweaks & Tips

Yes, Raceroom only utilizes one thread, so it's quite easy to be bottlenecked by your CPU, and CPU will never show 100% usage.

 

Even that one core won't be used at 100% as there is some magic going on with CPUs

Anyone using OpenComposite - did you stumble across issue that causes the game to crash if you try to switch to other app (Alt-Tabbing)? It reads "Expression is false unexpectedly". I think it started to happening after fresh Windows install and move from Win10 to Win11, but could also start happening a little bit later


This is what's in log:

Code:

15:37:16.231 TID:0x1308    TraceStatrtupMsg  Line:136    - Wolf's Open Composite (TIWM fork) version: 1.0.1.0

15:37:16.231 TID:0x1308    TraceStatrtupMsg  Line:138    - Requested configuration:
15:37:16.231 TID:0x1308    TraceStatrtupMsg  Line:139    - supersampleRatio=1.300000
15:37:16.231 TID:0x1308    TraceStatrtupMsg  Line:140    - enableLayers=true
15:37:16.231 TID:0x1308    TraceStatrtupMsg  Line:141    - enableCubemap=false
15:37:16.231 TID:0x1308    TraceStatrtupMsg  Line:142    - threePartSubmit=true
15:37:16.231 TID:0x1308    TraceStatrtupMsg  Line:143    - useViewportStencil=true
15:37:16.231 TID:0x1308    TraceStatrtupMsg  Line:144    - postInitCmd=""

15:37:16.231 TID:0x1308    TraceStatrtupMsg  Line:145    - dx10Mode=true
15:37:33.304 TID:0x1308    VR_InitInternal2  Line:319    - Runtime initialized successfully.

15:37:33.304 TID:0x1308    CVRSystem_012::CVRSystem_012  Line:300    - Created.
15:37:33.304 TID:0x1308    CVRRenderModels_005::CVRRenderModels_005  Line:1076    - Created.
15:37:33.304 TID:0x1308    CVRCompositor_016::CVRCompositor_016  Line:20    - Created.
15:37:37.040 TID:0x1308    CVROverlay_013::CVROverlay_013  Line:602    - Created.
15:37:37.040 TID:0x1308    BaseOverlay::CreateOverlay  Line:116    - New texture overlay created "overlay.Menu" "Menu"
15:37:37.040 TID:0x1308    BaseOverlay::CreateOverlay  Line:116    - New texture overlay created "overlay.HUD" "HUD"
15:37:39.270 TID:0x1308    BaseCompositor::CreateCompositorAPI  Line:362    - Creating new Hybrid DX11 Compositor
15:37:39.271 TID:0x1308    DX11HybridCompositor::Invoke  Line:74    - Generating new swap chain
15:37:39.275 TID:0x1308    BaseCompositor::CreateCompositorAPI  Line:362    - Creating new Hybrid DX11 Compositor
15:37:39.275 TID:0x1308    DX11HybridCompositor::Invoke  Line:74    - Generating new swap chain
15:37:39.283 TID:0x1308    BaseCompositor::CreateCompositorAPI  Line:362    - Creating new Hybrid DX11 Compositor for layer use
15:37:39.283 TID:0x1308    DX11HybridCompositor::Invoke  Line:74    - Generating new swap chain
15:37:52.152 TID:0x1308    oovr_abort_raw  Line:48    - Abort!
15:37:52.152 TID:0x1308    DX11HybridCompositor::Invoke  Line:67    - Expression is false unexpectedly

Besides that, it works perfectly fine, it's just annoying when I can't check anything outside the game


EDIT:
Found out what was causing it - NVIDIA G-Sync.

 

Interesting. Also, and please forgive the dumb question, but OpenComposite still only works with non-WMR headsets in Raceroom, correct? Just want to make sure I didn't miss anything.

 

Oh, I wrote "one core". It's incorrect, it's "one thread". Because that thread isn't locked to one core by default, Windows can move it between cores. That's why, as Rad said, you won't see 100% usage on one core anyway.

 

I believe so. The one listed in first post wasn't updated for 3 years and apparently the original Open Composite doesn't work with RaceRoom - at least it's listed as broken in compatibility list

 

I did some more testing last night, and it seems like I end up dropping down just a few FPS from 90FPS in those sections of Spa you mentioned despite playing with various settings. This seems to happen even if I drop to 4xAA or drop the number of cars rendered. SteamVR resolution doesn't effect it either. Granted, these are primarily GPU related settings that I changed. Is it realistic to expect a locked 90FPS in Raceroom? If so, which setting/s would you suggest changing next? Thanks!

 

I cant even get R3E too start in VR using SteamVR on my Reverb G2. It just starts to the little Raceroom screen and hangs there for as long as i can wait. Waited 10 minutes today, went got a drink , hung a piss and still that little Raceroom screen is there. What's the trick these days to start R3E?

 

you have to use your mouse, just click on the screen. btw make sure that raceroom is in the foreground / focus

 

This is what i have indefinitely.
I start Steam, click R3E, set to SteamVR and this is the only screen i get. I click it, it just says R3E isnt responding, close or wait.

 

Is it the same on a monitor? If yes, it looks like a connection routing issue. Try a VPN if you can.

 

It seems i need to use 32 bit SteamVR. It now works. Thanks for you help. But is 32 bit correct or is there another issue not allowing 64 bit to work.