I've been using Krita for awhile now, but recently its started to act up. Whenever I paint on the canvas, it doesn't display the cursor or brush circle on the canvas at all, and it takes up to a whole minute for the strokes to actually show up on the canvas. It happens regardless if I use a mouse or my tablet. I've already tried reinstalling Krita before, but that didn't clear up the issue. Is there anything else I can do to fix it?

Try to disable opengl or update your display driver: https://docs.krita.org/KritaFAQ#Krita_s ... _Intel_GPU