What I have also just done, is to remove “toggle freelook” (cockpit view) from the middle mouse button. That way it doesn’t go into freelook mode, which you do not need (or want) in VR.
I still haven’t found a way how to stop the “cannot initialise vr” error when you go into 2D mode and back.
Something I did try was to uncheck “custom rendering” in OpenXR - it didn’t help, but I’m sure MSFS is smoother now.
Regards
Steve