Sometimes I also feel that Idea is too slow, especially for smaller projects or languages where I do not need top tier support. ie. I am backend rust and python programmer. I also have to work with JS/TS and C++ projects but I mostly only read through them.

I started using neovim with plugins if syntax highlighting and good navigation is enough. I have also set up ideavim configuration to be as close to neovim as possible. Now I can easily switch between Idea and neovim with almost the same workflow.