Guys,
I don’t know if this is related. I’m still on 20H2, so not sure… I flew fine, then I got horrible performance, quit the sim and restarted. I got an error telling me something about incompatible hardware, then it loaded up Win Store and attempted to download an update for XBox Gaming Services which failed during the installation.
Luckily I found help here:
The solution by NikitaMendelbaum did it.
IF you experience something like this… have a look at that.
Edit for the Search: Error code 0x80073D26