Going into VR mode while using PiMax headset sends images of what is seen in left and right eyepiece of headset back to monitor as well. You have to lift headset and peek to see it and it fills a lot of the monitor’s screen. If watching FPS with MSFS developer mode you can even see that displayed on the monitor while in VR mode.
That all is fine but I suspect that some CPU/GPU resources are being consumed to render all this on the monitor simultaneously with the VR headset.
So is there a way to configure settings to optionally restrict MSFS from working to send anything to monitor while in VR mode?
No, the resources used for the “mirror window” are extremely minimal and do not affect performance.
It’s a simple double-blit, costing perhaps 100-200 microseconds on a modern GPU. Assuming you’re running around 50 FPS, that’s something like 0.5% or 1% overhead.
There is no option to turn it off.
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Thanks for your technical insights on the performance impacts of mirror output to monitor. Being a new MSFS flyer this year I elected to explore capabilities using my older workstation but upgraded with just a RTX 3060 Ti card. Getting this marginal setup tuned up and working well enough at 3840 x 2160 resolution was a very interesting process. Now on top of that I’m throwing the PiMax 8K+ VR headset into mix with it’s own high resolution demands and getting educated on how far I can push everything. With MSFS graphics settings put to “low” VR viewing is still a little jittery when flying low over things (debug showing around 30 FPS) but I still have different headset settings to mess around with so to maybe get an even smoother looking visual out of my cockpit window.