It is not a question of low FPS. My equipment (although not top shelf) is still not tragic: i7 8700K, 1080Ti, 32RAM.
This is quite a sufficient configuration for the Rift S.
Even if I reduce all MSFS settings to low and set SS to 1.0 - I still have cockpit “jerking” (only cockpit).
I’m not the only one with this problem.