I’m covering this question (and much more) here:
My 2070 SUPER VR settings and suggestions (Index - SteamVR)
My 2070 SUPER VR settings and suggestion (Reverb G2 - WMR)
These two guides are explaining some strategies you could use regarding FS2020 Render Scaling and the API (OXR or SteamVR) Super Sampling. You might want to further read the “Index” discussion, many using Oculus are also finding this is helping them.