I have not found a better 'true' IDE experience than JetBrains. Once it has done it's thing, it works pretty good. If your projects are big like a C++ codebase +2mil LOC then well the latency is going to suffer.
If you count VSCode as an IDE then I would suggest neovim with an LSP and a fuzzy finder. It is the fastest/best dev setup I have experienced for most things.
If you are very latency sensitive I am afraid an IDE/'smart'-editor may not be for you. Then I again would consider some lightweight editor that has fuzzy search and no intellisense.
If you count VSCode as an IDE then I would suggest neovim with an LSP and a fuzzy finder. It is the fastest/best dev setup I have experienced for most things.
If you are very latency sensitive I am afraid an IDE/'smart'-editor may not be for you. Then I again would consider some lightweight editor that has fuzzy search and no intellisense.