To add to my previous reply, The problem seems to be caused by the 528.49 NVIDIA drivers. I had the 516.49 installed (clean install) and the problem disappeared. Hope I helped.

Dear Nathan, I had exactly the same issue and I had a hard time concentrating. I finally solved it by uninstalling Archicad, but using iobit uninstaller.The difference with uninstalling from windows settings is that iobit uninstaller erases everythin...