I've noticed extra head movement "wobble" with my Quest 2 on wired Link and direct Oculus connection at startup - as opposed to the SteamVR connection which is smooth as you rotate your head on the ground with no flying. I noticed that months ago but failed to report it since the SteamVR approach was fine and I wondered if some updates from IPACS would fix it. Maybe it's not that important since there is a work around (use SteamVR) but I was doing some testing today and decided to take the time to report it. I imagine that some setting (enabled/disabled ) or maybe an HMD accelerometer gain is too high. It is very pronounced so my head must remain very fixed to tolerate while flying - thumping the HMD with a finger causes a lot of vibration in the scene. Again, there is no problem with Q2+Link+SteamVR or HP Reverb+WMR.
My PC is a 9700K@5Ghz+RTX2070+32gbRAM. My performance at ORBX Monterrey+EC135 heli is about 60fps (resolution set at 3500x3500 or so) without motion smoothing (ASW for Q2) so I use ASW and get a very solid 45fps so that a tail rotor turn is very smooth visually - not stutters.