alt Hacker News> On my old Ryzen 3600X running Arch
> vim still is a lot faster though.
you might want to make sure you're comparing apples to apples though. the "emacs" command most likely is going to load the GUI emacs so a lot of gui libraries (if you're running a recent emacs then even GTK libraries) whereas the nvim command isn't going to load gui libraries at all.
maybe try with a non-gui version of emacs (or maybe calling emacs -nw)
no, this is the TUI version. X11 emacs with all the composited effects needs about 200-250ms to open (about the duration of the animation for opening and closing it). That's more like OP's timings.