I would love it if jetbrains were to speed up IntelliJ. I started a new job writing Java professionally last year and, up that point, I had no idea that IDE's could actually be that slow.
My company gave me a brand new, beefy Macbook pro and that thing can barely handle IntelliJ sometimes...
Just use VS Code. Its Java support isn’t the best, but it’s good enough and the rest of the IDE makes up for it.
I feel like a lot of the love for IntelliJ is a sort of Stockholm Syndrome combined with relief at not using Eclipse.