Comment by Forge36

Profiling[1] your own repository and tweaking as necessary (possibly disabling auto-status refresh) will likely yield significant performance improvements.

I use magit with a very large repository (100k files, millions of commits) it's still not lightning fast like it is with smaller repositories, I'm still finding it an improvement over the CLI.

My config notes this saves me ~13 seconds in git-status

  (remove-hook 'magit-status-headers-hook 'magit-insert-tags-header)

[1]: https://docs.magit.vc/devel/magit/Performance.html