I searched and already checked/tried the solution of making sure the display refresh rate was the same on battery and on a charger.  I even changed both to a different (matching) setting, but it didn't make a difference.

However, this behavior is only occurring in Windows 11, not on Windows 10.

I checked the settings in Precision Optimizer and they are the same in both operating systems.

All drivers are up-to-date (as per Dell Command Update.)

This happens no matter which charger I use.

Anyone have any clue as to what might be going on?