The idea of this simple package was taken from this Reddit post, all it does is temporary sets file-name-handler-alist to nil (or fnhh-initial-alist customizable) and restores the value on ‘emacs-startup-hook (customizable fn-hook), so it can (sometimes) speed up emacs startup time a little bit.
The main idea is to call fnhh-mode as early as possible (though you can experiment with that), I prefer to put it right after quelpa-use-package, so I can install it directly using :quelpa keyword.
(use-package fnhh
:quelpa
(fnhh :repo "a13/fnhh" :fetcher github)
:config
(fnhh-mode 1))