I run both 6700xt and 7800xt without any problems with meta quest 3 using both airlink and cable link. (two identical pc’s exept gpu: 5600x, 32gb ram)
Never felt the need for virtual desktop app, i only use official link app from meta.
From other forums i have read this is what i found out:
7000 series cards are VR ready. More than capable enough. Its headset manufacturers fault that they dont offer support for what is a 1yr old card series already.
Not AMD’s fault!
Hopefully one AMD official can confirm this.
P.S. I play DCS wich is a weird title in VR even if you use a Nvidia card. No problems at all with the 7800xt!