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by gurkendoktor 2283 days ago
Indeed it is a software problem. In my experience, JetBrains IDEs perform terribly on macOS as soon as you use a 5K/scaled 4K screen.

A good GPU doesn't help. I've just upgraded to a new 16" MacBook Pro with the maxed-out GPU hoping it could handle CLion on a 4K screen, but it's still worse than anything that I've ever seen on Linux. (Not to mention that this laptop generally suffers from input lag.)

One of the many bug tracker threads about this issue: https://youtrack.jetbrains.com/issue/JBR-526?p=JRE-526

There's a linked ticket about rewriting the renderer to use Metal on macOS, hopefully that will solve the issue once and for all.