I solved it with:
Remove drivers with DDU
Then Install Radeon-Software-Adrenalin-2019-Edition-19.12.1
And then Unpack adrenalin-2020-20.3.1-minimalsetup-200318
And Update Just the drivers from Device manager.
Thats made me a stable system. The 2020 GUI is killing the system and making it unusable with dual screen.