[eddd-ddde]

This is obviously massively understating what an IDE does.

Do you never use language server features? Showing git blame on files? Doing regex search and replace? Doing multi-cursor editing? Run test?

If you genuinely never do, then that's ok, you don't need an IDE.

[allarm]

I do this all the time in Emacs, which runs on an old computer and handles it quickly. None of the tasks on this list require significant CPU resources.