Welcome to the club, it has been happening ever since this summer.
AMD has not fixed it yet,and fanboys here blame the users.
For now i can only say go back to WHQL-Win10-64Bit-Radeon-Software-Crimson-16.7.2-July19
with 16.9.2 i do get a crash everyday.
I cant even install the 16.9.2 update because of black screens
How exactly are you uninstalling and then installing the drivers? it sounds like you are having conflicts due to something being left behind during the update.
Do you or have you ever used Display Driver Uninstaller?