Seriously. I love the IDE but given that my idle workload of Electron apps and Docker Desktop VM brings my discretionary allotment of RAM down from 32GB to 8GB, I have absolutely no headroom when running JetBrains IDEs so I keep them closed unless there's a specific feature I want.
What OS are you running? I currently have three Jetbrains IDEs open on my MacBook (M3 Max/36GB) and don’t notice any issue (although I don’t have any electron apps running which probably helps).