The magenta pixels appear when on window is placed above another and the effect is worse when
the top window is being dragged. The phenomenon has only appeared in the last few days and I have made no changes to the hardware or software
This is my system
Has anyone any idea what causes it and is there a fix?
I see nothing wrong. And I’m looking very hard. Maybe I’ve gone blind?
I don’t think so, however, since everything else is fine. I’m going to suggest you test your cabling or a plug or something, because it looks fine to me.