There arent any artifacting outside of gaming (BIOS included).
Will reinstall drivers with DDU and report back here in a day.
I am having the same exact problem with fortnite, someone said maybe Fortnite is doing that because of BattleEye just being installed. Dont know, but it also does it on league, and it didn't do it for me like a few weeks ago but it just started. Let me know if what you're doing to the drives helps because I can't seem to crack what it is.
I even reset my whole PC, but that didn't help. The moderator Rouge Leader told me it could be internet lag so I would make sure everything with your internet is running smoothly, though it will not be the problem in your case.
You could also run 3dmark, run Timespy and make sure everything goes well.
Let me know what you find, I'll probably do the same.