It will suggest a tweak to config if it sees live reload times going past 4s. That seems to help a lot on my 2019 MBP.
I hear you on point #2 though. The Red Hat IntelliJ plugin for that seems janky to me. And JetBrains own plugin doesn’t seem great either. In fact I don’t know if I’ve ever seen autocomplete in a Qute template ever.
Shame, because the rest of the stack is so damn good.