Is your Magic Mouse acting sluggish and tracking slowly? If so, there are several steps you can take to get it back up to speed (literally). First check out our article, Things You Can Change With Your Mac’s Mouse and Trackpad Setting.
If adjusting settings doesn’t solve the problem, simply wipe clean the glass on the bottom of the mouse that houses the laser. Heck, when my mouse seems “tired,” I simply pick it and blow any dust off the glass. That almost always does the trick. If that doesn’t do the trick, here are some other suggestions.
Reset the connection and re-pair the device
To reset your Magic Mouse’s connection with your Mac, go to System Preferences > Bluetooth. Hover your cursor over the Magic Mouse icon. When a Close button (a circle with an “x”) appears, click it to remove the mouse from your system.
Turn the mouse off and back on so it goes into discovery mode, and pair it back up with your Mac. You can reverse the previous steps by going to System Preferences > Bluetooth.
Or you can go to System Preferences > Mouse and choose the “Set Up Bluetooth Mouse” option.
Reset your Mac’s PRAM or NVRAM
PRAM (Intel Macs) and NRAM (Apple Silicon Macs) basically store settings related to your startup disk preference, display, audio, and various other settings controlled within System Preferences. These too can help revive your mouse under certain circumstances.
Before resetting your PRAM or NVRAM, disconnect all of your external devices. Next, shut down your Mac, then restart. Hold down the Options-Command-P-R keys at bootup. Let the system reset a couple of times with these keys held before releasing them and allowing the system to boot normally.
This approach should clear up any mouse problems not resolved by other approaches. Also note that you may have to re-enter some system settings after resetting the PRAM or NVRAM.