Video device for full screen playback broken
Hi all. Has anyone ever seen this problem before:

The full screen monitor I've selected randomly jumps to the bottom left of the screen and cuts off half the sequence - the moon behind is the desktop. It's bizarre and irritating.
It's a 3 screen set up (but has always happened even with 2 screens)
Graphics card is up to date etc, I'm on Windows 10 and this is PP2023 (although it's always been a problem in other versions also)
It's really irritating! Any ideas?
