FYI, i managed to resolve this issue by installing OpenXR toolkit, then i launched LMU from SteamVR and it worked fine there, then i was able to launch it normally from my monitor 2D and after launching fine it worked in VR again as before. I then deleted OpenXR toolkit and went back to using Oculus Tray Tool, and it has worked fine since so far, so whatever i did seems to have reset something and fixed the error. (And yes, not sure that Trace Log file was any use, i know...)
LM Ultimate VR thread
- Thread starter Wajdi
- Start date
JellyGoNuts
New member
First off, thanks to all of you for providing usefull information on optimizing stuff!
I found a fix for the notorious 'Bahrain at night' performance drops. Setting track circuit details to low makes a big difference for me. You barely notice the change in details. I can now race at night here without the horrendous fps drops. I can even do this with heavy rain at night (!) although there are some drops here and there but definitely manageable.
Big caveat though: I'm running just one class (GT3). Multiclass is still too demanding at this track even with visible cars set to 13 or something.
Setup:
RTX 4080, 5800X3D
Pico Neo Link 3 (Display port connection) at 100% resolution
OpenXR fixed foveated rendering set at quality, CAS 75%
Few tweaks in JSON settings, disabling Live Broadcast displays on track, etc...
I found a fix for the notorious 'Bahrain at night' performance drops. Setting track circuit details to low makes a big difference for me. You barely notice the change in details. I can now race at night here without the horrendous fps drops. I can even do this with heavy rain at night (!) although there are some drops here and there but definitely manageable.
Big caveat though: I'm running just one class (GT3). Multiclass is still too demanding at this track even with visible cars set to 13 or something.
Setup:
RTX 4080, 5800X3D
Pico Neo Link 3 (Display port connection) at 100% resolution
OpenXR fixed foveated rendering set at quality, CAS 75%
Few tweaks in JSON settings, disabling Live Broadcast displays on track, etc...
LMU has OC dll already installed. You can check the OC log from %localappdata%/OpenComposite/logs/opencomposite.log
The dll is a revision from August 28th 2024.
Call Me JAMES
New member
https://ahp.li/94536db703ae29a6f25d.jpg
I have this when I want to play in VR.
The game is ok nonVR.
Other games are ok in VR
What can I do with my Pimax Crystal Light?
I have this when I want to play in VR.
The game is ok nonVR.
Other games are ok in VR
What can I do with my Pimax Crystal Light?
Last edited:
Moe Ostermann
New member
We need allso TIR (TrackIR/Natural point) like in rFactor 2 ! PLZ ! 
karakartal
Member
Hello, I have an oculus rift s. The interior of the car is nice, but the exterior is very blurry. Is there a solution to this problem?
GaetanL
Active member
Hi, if the interior is clear (the dashboard is readable), then it's not a VR issue, otherwise everything would be blurry there too. I’m leaning more towards a graphics quality setting that's too low.
karakartal
Member
The race is very difficult because the other vehicles, track and objects are blurry. I increased the resolution with the Oculus tray tool but it did not help.
fred.ostli
New member
I use Pico4 i and VR was working fine until this message appear, "unable to init vr runtime vrserver iternal error (12.." What can I do?and I am now unable to use VR.
Chug JGR
Member
NIt's not a very orthodox solution, but I had no other choice to get VR back. Even reinstalling the game didn't stop the VR runtime error. The solution is to use "openvr_api.dll" and "steam_api64.dll" from the rFactor 2 game. I have it installed. Copy and paste them into LMU. It will work with SteamVR, improving sharpness and allowing you to use configurable overlays in CrewChiefV4, such as RelativeOverlay, which tells me how much I need to refill at each stop.
fred.ostli
New member
Thankyou so much, worked for me
Hi I'm using a HP Reverb G2 and a 3080TI. So far VR is running good with Steam VR, but I want to tweak my settings but can't see my fps. In ACC I used fpsVR but that doesn't seem to work with LMU. How do you guys keep an eye on your fps and headroom?
Or should I switch to OpenVR, although Steam VR is running good at the moment?
Or should I switch to OpenVR, although Steam VR is running good at the moment?
tennenbaum
Member
OpenXR Toolkit shows FPS and more, and will enhance your VR experience a lot. https://mbucchia.github.io/OpenXR-Toolkit/
Don't get confused by the developers own notes about the app not being supported or updated any longer. It just works perfectly. (I have a G2 too). And you need "OpenComposite" that switches from SteamVR to OpenXR(Toolkit) https://gitlab.com/znixian/OpenOVR. After installing both apps, you just start the game on Steam choosing Steam VR in the Select Window and the the OpenComposite App switches to the openVR Runtime environment, this way allowing OpenXR Toolkit to do its magic.
lamer of fortune
New member
Hi all, just want to share the nice surprise that happened to me. I upgraded from a RTX 3070 to a 4080 Super. CPU is a 5600x. VR is still a valve index . After the upgrade I still had issues with stutter no matter how low tuned the settings. I however used full super sampling resolution most of the time. I was a bit disappointed about this performance
However I figured out that the CPU was the bottleneck as after I cranked up the MSAA to 8x the stutter was gone and I have good looking rock solid 90 fps with medium detail (still no shadows but more because of distraction) with 18 cars visible. I only play online.
However I figured out that the CPU was the bottleneck as after I cranked up the MSAA to 8x the stutter was gone and I have good looking rock solid 90 fps with medium detail (still no shadows but more because of distraction) with 18 cars visible. I only play online.
You don't need the OpenComposite switcher. LMU already has OC dll file and you can just set WMR as default openXR runtime and it's good to go.
Sergii Soroka
Active member
hi. tell me how it possible to limit the frame rate of quest3? the openxr frame counter shows 120-121 and it seems to me that this is the cause of small stutters. they are barely noticeable but I see them with my peripheral vision. I want to try to limit it to 119 or so.
2ndLastJedi
Member
Cap fps in driver software or app like MSI Afterburner.
Sergii Soroka
Active member
Don't work
2ndLastJedi
Member
Really? What brand GPU, Nv or AMD? cause RTSS part of MSI AB can cap system wide or Nv can cap per game.