Having finally finished my fresh re-install of Windows and MSFS, an on-going issue since the previous installation is still present - any time there is an overlay on the screen, it introduces stuttering. By 'overlays' I mean if I use Game Bar (to take a screenshot, record video, display fps etc) or if I change system volume (and the volume level display comes up in the top left of my screen). The stutters immediately stop when I close Game Bar (clicking anywhere on the screen) or when the volume display fades away.
I've mentioned this problem several times but nobody else has ever mentioned they have experienced it nor offered any suggestions to fix it. It doesn't appear to affect anything else, such as either of my Forza games (which I've yet to re-install).
Any ideas?