First i had a R9 280,and it was same like you can see in video i attached,then after few years i bought nvidia gtx 1050ti and this problem disapeared.
Not long ago i bought an RX580 nitro,and the same problem come back...
Problem is when i turn on the PC,all i can see is flickering/flashing (see video) some random images from last time the PC was on,
that flickering continues until welcome screen from windows.... I'm using an panasonic TV for monitor,and i thinked that is a problem,but when i used nvidia it was all good,so it is only the problem in amd cards.
I tried all drivers updating,even new windows installation didnt help