Ok so two things I have been faffing with this eve and only just finished said faff, slightly annoyed but at the same time found some zen...
1: When Windows has been running for a while and you have an Explorer folder or few open, dragging icons/windows etc will result in some lag that causes the cursor and window being dragged around to rubber band about slowly until it finishes whatever path your cursor was moved about in.
This is not a hardware issue. It is purely an Exporer.exe issue with Windows. This was an issue on Windows 10 too but it was mostly rare (I never saw it happen on 10 but others did on Reddit). Windows 11's DWM seems to amplify the issue in orders of magnitude. It only happens when an Explorer window is open minimised or not doesn't matter).
Multiple people offered multiple "fixes" but the only thing that I found to be consistently reliable was to end any instance of Explorer.exe in task manager and start it again.... Until now. I found mention of a setting in Windows 11 under Visual Effects called Transparency Effects (just search the term in your start menu and you'll find it come up). This makes any Explorer WIndow slightly transparent and blur to the desktop wallpaper. Initially I thought this was a cool feature that looked neat but knowing what I know now, I'll be happy with standard dark Explorer folder window backgrounds thanks.
Toggling this setting off fixes the issue completely but bear in mind you may see the issue again if you have other apps running that use blurred transparency effects (Wox launcher has been mentioned on reddit too etc) so just keep those app transparency effects off if they blur in front of Windows as DWM will throw a fit after a while.
2: The inconsistent dark system theme annoyed me especially task manager to the point I wanted to see just how quickly I could mock up a dark one i Photoshop. I did it in a few minutes
All I did was invert the colours and then change the black BG to a dark grey to match the dark theme. If I could do that in minutes then what in the solar system's arse have MS got as an excuse to not dark theme things like this?!