Processor: 12x Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz Memory: 32860MB Operating System: Windows 10 Pro GPU: Radeon Fury X & Firepro w8100 Problem: When painting with brush on windows 10 my strokes at times redraw, or don't appear until later with the freehand stroke taking forever to load. I've used the Linux version and don't have this problem at all. Reproducible: Always Steps to Reproduce: 1. Draw with any brush Actual Results: Redraw what was already there or take long to appear Expected Results: Seamless painting
That's the instant preview: https://userbase.kde.org/Krita/Manual/BrushEngines/InstantPreview You could try to turn it off, but then the initial painting would be a bit slower.
It depends on the canvas size, on the brush engine. For some brushes, the delay isn't visible, for others it is. But it's expected behaviour in some cases.