I have coral painter 2018 using Windows 10 and is in the Wacom tablet dtz-1200w
at upgrade my tablet and to the DTZ and now for some reason but I do my line art the side of the lines are not smooth they're all broken up and blocky does anybody know the fix for this
Long time back I had the same sort of thing happening, from memory it needed a new wacom update to fix the problem. Unfortunately I can't remember all of the ins and outs.
I believe in the meantime I had to zoom in and do my lines in closeup when possible.
Just cos I can't properly remember, also try switching off windows inkspace, see if that makes a difference.