Quest 2 + 2080Ti + Link + FS2020 set in ULTRA : Best performance simple setup guide

Will try this set up - thanks for the info.
Been losing my mind trying to get stable results.
i7-10700K
RTX3070
32GB RAM
Oculus Quest 2 - Link cable

Also another frustrating issue I have - I change the VR Graphics settings and save. Try them out, get fed up, close the Sim. Next time I boot the Sim up to try again, the VR Graphics settings have all reverted to default values!!
Any ideas?

Many thanks again