The IDE is running low on memory and this might affect performance. Please consider increasing available heap
Answered
I encountered this warning and IDEA becoming slow, even if I changed the VM options. But no matter how large memory I allocated to IDEA, or changing Xms, Xmx, XX:MaxmetaspaceSize, the warning popup window continues to come out. Still I cannot find anything abnormal in java_error_in_idea.hprof.
It seems that after opening project in new window leads to this, because it hadn't happened before that. And I used to open multiple projects in separate window in previous version IDEA at the mean time, everything went well.
It is so frustrating. Hope get the solution ASAP from official.
OS: macOS monterey, Memory: 64G, CPU: I9 intel-chip
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What custom plugins are installed? Try disabling them all.
Also, please share the idea.log, so I can inspect VM options and related exceptions. You can use https://uploads.jetbrains.com/ for sharing.