This issue has been fixed by upgrading to MacOS Catalina . Various Illustrator users have confirmed that on upgrading their macOS issue is fixed.
Please comment on this thread, if this issue is fixed in Catalina (10.15.1)
An error occurred while saving the commentJon commented
Same issue on a 2015 iMac retina with (27", 4 GHz Intel Core i7, 32GB ram, AMD Radeon R9 M390 2 GB.)
There is a similar bug (with more votes) report regarding Illustrator here: https://illustrator.uservoice.com/forums/601447-illustrator-bugs/suggestions/38111224-illustrator-2019-gltches-out-video-card-in-macs-wiJon supported this idea ·