Yesterday, in a drawing file that had previously worked smoothly enough, line and other drawing tools began to have a weird lag. Click to start line, eg, and nothing would show, click to finish, and as late as 8 seconds later, a line might show.
Snaps sort of work, but do not highlight to signify their activity. So, eg, mystery line described above might start invisibly at a midpoint.
Restarted program and computer several times with no success. First time I’ve seen this issue...any suggestions?