I never posted specs of my monitor.
Okay, I got rid of the microstuttering on my last boot. I changed a couple of settings in my BIOS; I set my memory to its native 2666MHz (I had it at 3000MHz which had been working fine but I wanted to try it anyway) and disabled ‘PCIe Native Power Management.’ IMHO the latter setting was the culprit. I noticed KDE’s UI was snappy again and tried a couple of games; Fallout 4, Dying Light 2 and (because of the kids) Roblox. All were smooth but I was still seeing tiny texture areas blip in and out of existence.
I had to sleep but I’ll be doing more testing when I get home.
Odd thing is [that] I temporarily had an Asus TUF 6800 OC edition 6800 that had given me no problems but returned it because I’d ordered the XT edition and was sent that card (bastards tried to get over on me or are incompetent). The shroud, heatsink and fans are significantly smaller on this reference 6800XT.
@Omano, a personal thank you because I see you try to help a lot of people on the forums. 