On which computer is this - the laptop or your main PC or both?
Which title(s) is/are showing this issue?
Is the residue just on playback in the Preview monitor, in the exported video or both?
What are the specification(s) of the computers this occurs on - please quote processor name(s) and model(s) in full - see this topic for details required.
What are the 2 Hardware acceleration. . . . options in the Program settings, Import/Export tab set to checked or unchecked?