Great tip. Should add that you need to set the System Preference Tracking Speed to Minimum, then execute the scale command and then slide the Tracking speed up to Max. I used:

defaults write -g com.apple.mouse.scaling 10

and it's finally at an acceptable speed.

codepocket.com

1. 先將滑鼠速度調到最低
2. 執行 defaults write -g .... (最大就是 10 了)
3. 再將滑鼠速度調到最高

速度似乎就正常了。（適用所有滑鼠）