Welcome in the VR ! MSFS is another game in VR, you don’t play, you fly !
For a better experience with VR (fps/smoothness…), i recommend you to use the OpenXR Tool.
(Yes, enhance VR is possible. that’s a pity it has to come from external devs, but talented ones !, a personnal project by a dev from Microsoft OpenXR team and another one from RealityXP)