You’ll find at the following link an indication of the kind of performance a fellow simmer got with 7950x3D/4090 in VR.
His headset is a Varjo Aero set to 39PPD i.e. 2880 x 2720 pixels per eye.
So it’s a lot of pixels to manage!
Can you please let me know what your FPS looks like with the current i7-9700K + 4090, in flat-screen mode 1080p?
You mentioned earlier it’s quite good, I would be grateful if you could provide some numbers with context on what you’re experiencing.