I previously used BetterTouchTool to override the maximum mouse cursor speed in System Preferences. However, as of macOS Sierra, this is no longer possible according to the developer (source).
I am not sure if this is due to a technical limitation on part of the application, or if it indeed is impossible to override the maximum mouse cursor speed.
Note that I am referring explicitly to the Mouse cursor speed – not the Trackpad cursor.
I am looking to increase the cursor speed of my Logitech Performance Mouse MX (without the use of Logitech Control Center!).
So the question is: How can the maximum mouse cursor speed be overridden (with a permanent setting) in macOS Sierra? Perhaps it could be done by a Terminal command or editing a plist file, but the solution could entail a third-party app.
Best Answer
There are 2 FREE ways to accomplish getting mouse speeds over 5.0 accelleration on mac OS High Sierra:
defaults write -g com.apple.mouse.scaling X
where
X
is the amount of acceleration you want in the form of a number with one decimal space after it, then logging out, and logging back in. Therefore if you wanted to increase your speed to 8 acceleration you would type in the terminal the following command:defaults write -g com.apple.mouse.scaling 8.0
Note: If afterwords, you adjust the mouse controls in System Preferences again, you have to once again enter the terminal command and log out to regain your accelerated mouse settings.