I really don’t see much of a difference.. How can I check that metal is being used?

you can check (frame-monitor-attributes)

in my case it includes (metal-device-name . "AMD Radeon Pro 460")

OK, so it should be working then

Thanks..

This looks really cool but the behavior is quite strange. Some shortcuts are different (e.g. Cmd-Shift-> instead of Alt-shift->) and jump-to-definition doesn't work ("No jump handler was able to find this symbol"). I use spacemacs.

ok, good to know. I didn’t run into any such issues yet, working with it for a day. I think they did have port-specific options for cmd and alt key handling

(global-set-key [(hyper a)] 'mark-whole-buffer)
(global-set-key [(hyper v)] 'yank)
(global-set-key [(hyper c)] 'kill-ring-save)
(global-set-key [(hyper s)] 'save-buffer)
(global-set-key [(hyper l)] 'goto-line)
(global-set-key [(hyper w)]
                (lambda () (interactive) (delete-window)))
(global-set-key [(hyper z)] 'undo)