I use a wired mouse with a 1000hz polling rate on an M1 Macbook Pro with vsync disabled system wide (through Additional Tools for Xcode 13.dmg[0] => Quartz Debug.app => Enable Vertical Sync; it only actually disables vsync if you use an external monitor and close the lid of the MacBook).

Like switching to the Classic Theme from Aero in Windows 7[1], as far as I can tell, this removes at minimum 1-2 frames of input lag (typing, mouse movement, etc.) throughout all of macOS.

In Firefox's about:config, after setting

user_pref("accessibility.force_disabled", 1) user_pref("general.smoothScroll", false) user_pref("general.autoScroll", true)

, I'm shocked by just how slow and laggy Chrome's builtin smooth scrolling implementation feels by comparison. In fact, it's so bad that I now open Chrome and all Electron apps with

open -a Google\ Chrome --args --disable-smooth-scrolling --disable-gpu-vsync --disable-frame-rate-limit open -a Slack --args --disable-smooth-scrolling open -a Spotify --args --disable-smooth-scrolling

You used to be able to disable Chrome's smooth scrolling with chrome://flags/#disable-smooth-scrolling, but that flag was removed for whatever reason.

I'm also surprised by how much faster Firefox's builtin middle mouse click autoscroll is compared to Chrome's ersatz AutoScroll[2] extension.

[0]: https://download.developer.apple.com/Developer_Tools/Additio...

[1]: https://pavelfatin.com/typometer/

[2]: https://chrome.google.com/webstore/detail/autoscroll/occjjkg...