I have the exact same problem and it occurs in a lot of games, some even crash because of this...
GTA V and FIFA 20 crash after a while since this problem occured, but games like rocket league, rainbow six siege, far cry 5 and valorant do not crash, but the graphical glitches are annoying.
A couple of weeks ago when i got my rx 580 I didn't have any problems, I mean if I was using the stock tuning settings in wattman, the games wouldn't glitch or crash, but I noticed that if I undervolt it a bit, slight glitches would appear but they were not annoying and I kept playing with my undervolted settings, but since my windows updated everything started glitching like in your video and I thought it's glitching because of the undervolted settings, so I returned the stock settings, because I remembered that they didn't have any problems, but with the stock settings it became even worse... I updated the drivers, because a friend told me that the new windows update doesn't support the version of my drivers, but the problem is still here... Can anyone help us?