I Have Been Using Custom Rig Usşng This Speciations:
AMD RYZEN 5 1500X PROCESSOR
AMD RX580 GRAPHICS CARD
MSI B350M TOMAHAWK MOTHERBOARD
WD 1TB HARDDISK
FRISBY GAMEMAX 650W 80PLUS BRONZE PSU
GSKILL 8GB RAM.
I USE ASUS GPU TWEAK II GAMING MODE SETTINGS
Graphics Was Flasing Sometimes. And Graphics Card Makes Weird Graphical Thing Sometimes.
There are issues with third party graphics controllers and AMD Wattman controls. You need to delete it and then re-install the AMD drivers using a clean install.