So far testing all kinds of settings, Im starting to realize that we must settle for 30-45fps with 8KX for now. There seems to be no way to improve the frame rate, without hurting the image quality too much.
Regarding image quality, I have also realized that using a higher Render Quality in PiTool (1.25 or 1.5) and reducing the SteamVR Super Sampling to a value that gives me around 3800 pixels horizontally, produces the most sharp image, highest GPU utilization (killing the temperatures on 3090 hehe) and more or less the same performance (30-45fps).
This looks way better than Render Quality 1.0 and SteamVR SS 80/90/100%. But performance is the same.
Also, the in-game Render Scale dramatically decreases image quality below 100%, so I would not recommend playing around with that one below 100 or at least not below 90%.
This is for 8KX only, in native mode.
Either way, this is a fantastic VR simulator - really not a bad first public VR version!
Please try running the sim in window mode. Disable G-sync, Game Mode and restart PC after installing the VR update. Parallel Projection must be used. Disable Vive-compatibility in PiTool.
On a sidenote: Given Asobo’s API choice; Have any of our multiple-headset-jugglers spotted any noteworthy differences between the OpenXR implementations from Valve, Oculus, and Microsoft (feature completeness/idiosyncrasies/performance/integration with platform stuff)? :7
One thing to note about Flight Simulator and performance: it REALLY wants a good CPU. Outside of VR, I got an RTX 3070 for my Ryzen 5 1600X computer, and at 1080p I could get around 30-40fps at High settings. But using the built-in FPS meter I could see that the CPU render time was almost twice as slow as the GPU render time, so I built a new computer that has a Ryzen 5 5600X (and to be fair, I also doubled RAM from 16GB to 32GB); now (in 2D) I get a solid 60fps at 1080p/High, and like 45-60fps at 1440p/High (averaging around 50).
Of course, I’m not planning to ever play in 2D again, so I’ll have to dial in good enough settings for VR - the comments here will help a lot with that
I dont have gamepass version, only Steam version. Has anyone been able to get it running with MS gamepass version?
I currently use SteamVR Beta since the previous GPUSpeed issues with non-beta version. Although I dont think its the problem here. It kinda makes no sense. Works for some, doesn’t work for others.
Yeah, but no CPU today can handle it with a proper framerate in VR. My 5950x has 16 cores/32 threads. Its maxed out on 1 core. A few cores runs at 30-50%, the rest are idle. Single core boost maxing out at 5125Mhz. Wont help.
The only thing we can do is balance the workload so GPU is maxed out to keep the same framerate while getting the best possible image quality, while saving some overhead for the CPU for more dense areas.
One solution is the one I mentioned above. Run a high Render Quality (1.5 or even higher), lower the SteamVR Supersampling so the output resolution kinda matches your Pimax resolution on horizontal plane. Then keep in-game Render Scale at 100 or above. Now GPU maxes out on utilisation, and CPU utilisation goes down a bit, while u maintain basically same frame rate.
Note that in dense city areas (New York, San Francisco, LA etc) and on big airports, your CPU will need that extra overhead as all scenery/buildings requires lots of CPU. So in these areas your CPU will most likely become the bottleneck.
Its all about finding a good balance while at least getting the best possible framerate, preferably above 40fps.
I had that issue the first 2 or 3 launches. Then it suddenly got corrected. If I remember it right, I did a PiTool room setup in between. And also did all changes I mentioned earlier. Suddenly that problem was gone. It really makes no sense. Ive been trying to replicate the issue again but it never happens anymore.
I am having the same issue as scud68 with a Pimax 8KX. SweViver, What Render Resolution are you using in Steam VR? I’ve tried all your other recommendations with no luck.
OC the 5950x is not that simple as Intel CPUs. Disabling the second CCU (the last 8 cores) helps a little to the single core boost, but OC above 5100Mhz is almost rocket science unless u go LN2, which doesn’t help much anyway. Check der8auer on YouTube.
