Welp… I’m gonna say this is solved. It seems it may have been a hardware issue. I did suspect this before, but I was hoping it would be something simpler. Bought a new higher wattage PSU, which I’m thinking was the culprit. being at the lower wattage, it was fine at 1080, but at 4k, my PC needed more power, especially while playing a heavier 3d game. I also replaced my GPU as well, just in-case (it was on the old side). So far, doing what I’ve done before, the issue is not happening, so I’m hoping its all good now (I hope).