Here’s my result, same VR settings as you state above, LSZH with World Update, default A320neo, broken clouds:
OXRTK performance info (which you can screenshot with WMR Portal app preview display turned on BTW):
And just to show you what a 4090 could do in your system, here’s what mine pulls with my current settings (still playing with it to get it just right, but aiming to be slightly CPU limited on the ground in complex areas and GPU bound everywhere else), which is 200% OXR, prefer frame rate over latency, VR default Ultra except DLSS Balanced, TLOD 100, bloom off.
