After arguably one of the worst driver updates in history, lets all list the confirmed issues with 19.12.2 (and 'recent' driver issues in general) because the Devs obviously need our help...
I can confirm:
Adrenalin 2020 Edition 19.12.2 Screen freezes in game but game still plays in background.
Adrenalin 2020 Edition drivers - "game mode" problem
plus the mentions of Vsync and stutter
Kind wish I knew I was gonna be a beta tester or I'd have opt'ed out instead of wasting my day off on broken software....