Regarding the performance question - I’m running an RTX 3070 and AMD 5600x with a G2 headset and have OpenXR custom resolution set at 80% and rendering in MSFS set at 90%. The display and smoothness are near perfect. The G2 is a phenomenal headset.
You will need the OpenXR dev tool from the MS Store to adjust that OpenXR custom resolution setting. Most folks have this at 70% - 80% for MSFS.
The in-game MSFS render resolution will require a bit of tweaking to hit a sweet spot between smoothness and sharpness.
Personally I don’t use motion smoothing, that can be toggled on/off in the OpenXR dev tool.
Spend a bit of time adjusting the headset straps and IPD adjustment for comfort and clarity. This took me a few days of fiddling.
MSFS in VR with the Reverb G2 is worth every penny I spent on hardware. The recent SU5 update was a milestone for VR performance.
You will be in for a few days of tweaking and there is a good chance the A320 displays may require you to lean in closer - but the depth perception on finals and the sense of being there is so so worth it.
Hope this is useful, you will definitely be tweaking between sharpness and framerate - which is par for the course it seems with MSFS in VR.