I installed windows clean a few days ago after getting my x570 back from RMA
THE HAF 932 RIG – HARDCORE GAMES™
The RX 480 is installed at the moment. Driver 20.2.2 WHQL will cause the machine to not enter standby or even let the monitor go off.
STANDBY ISSUES – HARDCORE GAMES™
I was able to resolve this problem with 20.3.1 which fixed the problem. This caused more than a few grey hairs trying every permutation and combination to isolate and fix the problem.
It seems that the bug surfaced with 20.3.1 so I am now using the driver on Windows Update pending a working driver. The driver on Windows Update is 2017 vintage, and you wonder why I am so cynical.