Sir, I have this exact same issue. I have been searching for someone with same problem for months, I even got support for this and they told me this was related to a failing screen, but I didn’t take that info as certain. I had my hypothesis about the source of the flickering and concluded it was heat as Dan says. I’ll try purchasing TG Pro as he recommends and see if it works. I hope your computer got a solution or maybe a replacement, thank you really much for sharing this issue so I can try to solve mine as well. Cheers.