There are known stability issues with the graphic card drivers on many mac models causing unreliable automatic rendering quality. Until Apple fixes their drivers, a workaround would be to use fixed rendering settings (Minimal/ Low / Medium / High / Ultra) instead of Automatic.

For more information, you may read the following blog post
https://www.capture.se/Bl...macOS-and-Intel-GPUs

and our dedicated webpage
https://www.capture.se/Support/MacMetalIssues