I checked this issue once again and:
- I have 10GB / 12 GB VRAM usage + 100% GPU activity (RTX 3080 12GB), so my GPU has some free resources (2GB)
- CPU with factory settings in BIOS (no OC)
- reconnecting VR (with reopening Oculus Home app) but the problem is still back (had it 5 times during 1 flight, even at cruise altitude)
- Oculus Link (cable)
- have never had this isse with P3D in VR (so it looks like it’s somehow platform related)
Hope someone will find a solution for it (users or maybe Asobo).