Hey everyone, my FS2020 has been stable now for over a week (touch wood). Here's what I did:
Uninstall nVidia Experience
Download latest driver for my RTX 2080 Super and do a (Custom) clean installation
Went to windows 'Focus assist' and set to Alarms only - 'During these times' is off and everything else is on
Kill any background processes I don't need from the Notification area including 'nvidia settings' and my graphics tablet
Run FS2020 as Administrator
Turned off vsync
Accepted the recommended in-game graphics settings but I dialed down some of the traffic, so I'm basically on 'High' but with a few things dialed back.
Hope this helps.