"Not snappy" is an understatement. It's a memory hog, and can visibly lag (keystrokes and mouse clicks) on my 3-year-old laptop depending on the project I have open. I probably wouldn't use anything else for Java or Scala development, but ugh, I would not call it pleasant to use from a performance perspective.
"Is an understatement". You are probably right. When I think a bit more of when I have opened huge monstrosities of Spring boot apps then it is quite slow. But for small projects I think it is "okay" and very feature rich.