I used EmacsEverywhere with ahk. It generally works great. Sometimes while an holding down ctr-f (or b) it sticks in an f (or b) instead of moving the curiosity forward (or back). I'm pretty happy with it though.

(Don't hate me. Years of Emacs usage is hard to overcome. I even made Emacs bindings for Davinci Resolve...)

There used to be a keyboard called Optimizr produced by a company called Matias: https://matias.ca/optimizer/

It hardware-mapped the CapsLock key to be a modifier for a bunch of other things, basically allowing your right hand never to have to move off the home row.

It's been discontinued but I managed to re-do a lot of the functionality in software using (a somewhat older version of) AutoHotkey: https://github.com/jasonincanada/dot-files/blob/master/optim...

There's one there for dvorak too of course

> very unresponsive

AutoHotkey seems to operate at a pretty high level in Windows' input processing stuff. There are lower-level APIs and tools available, but which behaviors are you trying to replicate?