https://bugs.kde.org/show_bug.cgi?id=399638
--- Comment #3 from Wontoon <wontoon...@gmail.com> --- (Sorry for the delay, was worn out from work I didn't even check my messages!) I don't remember ever enabling it (I am assuming "Basic" is the default setting?), but the "Brush Smoothing" is set to "Basic". Setting it to "none" showed some(?) improvement, but the sporadic lag is definitely still there (just not as harsh). I've also noticed that, if your pen is away from the tablet for a while and you try to make a stroke, the first stroke will not appear. Subsequent strokes will appear, though! It is definitely consistent with that, too. I also double-checked the Surface 4 and the Brush Smoothing setting is set to "Basic" as well, and as expected the sporadic lag does not exist on there. -- You are receiving this mail because: You are watching all bug changes.