IIRC that’s not composition’s fault but some application window delaying message posting with a poorly-done global hook. That’s also the cause for your mouse fr

IIRC that’s not composition’s fault but some application window delaying message posting with a poorly-done global hook. That’s also the cause for your mouse freezing for half a second then appearing where it should’ve been. Maybe DWM restarting also kills and reinitializes the window messages mechanism?