Intrigued by local-directory-first feature of McFly (It brings up commands you previously executed in that folder first). I tried it for a bit. But there was noticeable lag compared to FZF and also the UI was a bit shaky.

Went back to FZF (in Zsh).

I have a seven year zsh history. That may be a contributing factor for the issues ?

Not too different.

* We use heuristic based searches whereas mcfly trains a neural network * We offer a sync functionality to share history on multiple machines

mcfly is a great project, although they are looking for new maintainers apparently!