Hey there @jackaboy_2161! Welcome to the community! This issue can be caused by a significant number of things. I’ve brought a couple of threads with lots of different possible solutions. Often MPO (or any overlay done by graphics software really(ie Rivaturner, Afterburner, etc. )) is the fault for these types of issues. Though there’s multiple types: Graphical artifacting/black flashing, Menus moving rapidly but don’t black out, and menus opening and closing at frame speeds (DPI).
Most relevant:
Not as relevant but still many good fixes for issues like this:
Let me know which of them (if any) works for you!