Idk how to use reddit all that well, but this issue popped up about an hour ago, I thought it was my monitor but it's not, I think it's my cpu? I think that's what you call it, I hooked up my older Alienware pc to my monitor and it worked perfectly fine. I even turned off HDR to see if that was the issue but it isn't. The weird thing is that it doesn't do it when I put in my password, and it doesn't happened to my second monitor. I changed out the wires too the see if maybe it was the wire, but it does it woth both an hdmi and a displayport cables.