For IDE performance issues here's a few tips: 1. Make sure it's not your machine itself that's getting slow. On Intel Macbooks try running "watch pmgset -g the

For IDE performance issues here's a few tips: 1. Make sure it's not your machine itself that's getting slow. On Intel Macbooks try running "watch pmgset -g therm" and watch the speed limit. If it drops below 100 then nothing you do to your IDE will help. 2. If you're seeing freezing, try enabling the memory indicator in the status bar. If you see the freezes correlate with drops in heap usage, increase the maximum heap size. In this release they increased the default to 2G but that's still really quite small. I have it set to 8G and never see stalls. 3. On macOS try turning off "Displays have separate spaces" in System Settings. You can also experiment with toggling ProMotion off and setting the display refresh rate to 60 Hz. https://youtrack.jetbrains.com/issue/JBR-526/IDE-is-unusably-slow-when-using-a-4K-display-with-scaled-resolution-on-OS-X https://youtrack.jetbrains.com/issue/JBR-526/IDE-is-unusably... 4. Try turning off "matched brace", "show whitespace" and "show code lens on scrollbar" in settings. A lot of performance issues these days are to do with macOS and the myriad different ways you can fall off a performance cliff especially when working with external displays.