No. Blender (3D graphics), Autodesk SketchBook (2D graphics), UPBGE, MakeHuman, Gephi, and Godot all seem to work fine. As far as I’m aware, SketchUp is the only application I have with graphics issues.
Yes, I have a stock built-in iMac display. I’m not using a separate monitor.
Well, I’m not sure if this is what you mean, but I just updated to the latest OS & that didn’t solve the problem, unfortunately.
I don’t know if my problem is being caused by hardware failure because I’ve seen many other people have similar problems.
https://www.reddit.com/r/Sketchup/comments/8wi4ih/hi_i_installed_sketchup_2017_and_vray_34my/