Comment 2 for bug 1537335

It seems the "freeze-up" is actually the computer doing the work - I left computer for two hours and the circle was rough all the way around and the file could be saved etc.

However, the roughened circle had sprouted all sorts of tangential lines (about 10) going off across the screen that seemed to come from nodes. They were next to impossible to delete as the roughening creates so many nodes.