I've had this problem, too, and mucked around with various video card drivers without much success. I have recently tried turning off DirectX, and haven't had the problem recur yet, but it may be too soon to tell if that's really the cure. However, if you want to try this, instructions are on the ArchicadWiki site (search for DirectX) and do the registry edit. I haven't noticed any significant slowdown in 2D.
Richard
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Richard Morrison, Architect-Interior Designer
AC26 (since AC6.0), Win10