iTunes displays only static when playing a movie
I have iTunes version 12.12.7.1 installed on my Lenovo P14s laptop. I've recently reinstalled Windows 11 from scratch, ensuring I have current drivers, etc. I haven't attempted to watch a movie on the PC since early fall, but it was working then. I was using external monitors then and I am now. When the movie starts, multi-colored pixilations appear on both monitors, completely distorting the image - the best I can describe it is that it looks like a very grainy primary color posterization of the display. I can guess where the controls are, roughly, so I can stop the movie. Once I stop the movie and close iTunes, everything returns to normal. Audio is not affected.
Both monitors (Samsung) are running at 1920x1080, 60hz, which has worked in the past. Any thoughts, suggestions, software patches (I've seen other comments about this issue)?
EDIT TO ADD: I just installed Amazon Prime Video to confirm that streaming video does work - it does. This leads me to believe that there's an issue with iTunes.
Windows