Comment by nottorp
Hmm YMMV. I like it even slower for writing fiction, as in handwriting.
But the most important part is probably not the slowness but the distraction-free environment. Get a DOS machine with WordPerfect and it will work as well. But don't run DOS in an emulator that you can alt+tab away from and doomscroll...
An old 486 DOS laptop is great for this!