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Yes, you need to install Emacs. It is probably available from whatever package manager your system uses.
I prefer Doom (https://github.com/doomemacs/doomemacs) to Spacemacs. However I haven't looked at Spacemacs for many years; perhaps it's now on par with Doom.
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CodeRabbit
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Run emacs -q (no add-ons loaded) and it should be a lot faster than VS Code. Which means that a library you loaded is the culprit. Things like Doom Emacs are notorious for unexpected slowness since they're not very well put together and load questionable libraries.
In the unlikely case where emacs -q is still slow, use Emacs Mac Port (https://github.com/railwaycat/homebrew-emacsmacport/releases...).
This is at least 2x perceivably faster than VS Code on Mac.
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devil
Emacs minor mode that intercepts and translates keystrokes to provide a modifier-free non-modal editing experience
They all use evil-mode for Vim emulation. So it's just their choice of defaults and configuration style that sets them apart. Doom might have a slight edge with a focus on performance.
Evil-mode is not the only way. There are other approaches like devil you might want to check out.
https://susam.github.io/devil/ -
Then the slowness that you're seeing is probably Windows-specific, and that's why everyone else is telling you that Magit is actually fast.
WSL might make things faster.[1] IIUC, the problem is that starting new processes is much slower on Windows than on Linux/Unix and Magit relies heavily on that. This seems to have plagued Git tooling more generally but maybe this got fixed since then.[2]
[1] https://emacs.stackexchange.com/a/58444
[2] https://github.com/magit/magit/issues/2395#issuecomment-1710...
