See this white paper for more information. The antennas for Wi-Fi and Bluetooth are located there, and USB 3 devices placed there may interfere with your wireless connections. Do not place hard drives or other USB devices behind the rear of your Mac near the hinge of your screen. Some USB 3 devices, hard drives, in particular, can generate radio frequency interference that can cause Wi-Fi and Bluetooth devices operating in the 2.4GHz band to have issues communicating with your computer. I sometimes have difficulty with Wi-Fi or Bluetooth devices when USB 3 devices are attached to my computer. I had a bus-powered USB 3.0 hard drive connected to my Mac, and that, as it turns out, was what caused the problem.Īn old Apple support document (that has since been removed) noted that this can be a problem: I can attest that this solution has worked for me and my mouse cursor started working normally after I unplugged the USB drive from my MacBook Pro’s USB port. If you use one, remove the USB drive from your MacBook’s USB port to fix this. Sometimes, your Magic Mouse can be jerky and slow even after trying all the above options. In case the mouse pad you use is dirty, clean it. To address this, use a flat surface like your desk.
If you use the mouse on a bedsheet and such uneven surfaces, it won’t work correctly. Make sure you’re using the mouse on a flat surface Use a soft, dry cloth to clean the railing and remove any debris from the laser opening of the mouse. You can also pull out the replaceable battery and reinsert it. In case it doesn’t, move its pairing button to the off position. If your Mouse has a button to turn it off, please do that.
Several temporary glitches like irregular mouse cursor, laggy mouse input can be fixed by restarting your Mac. Now, try using the mouse and see if it works properly or not. After waiting for 30 seconds, click Turn Bluetooth On.
When Bluetooth devices like mouse, keyboard, external trackpad don’t work correctly, go to System Preferences > Bluetooth and click Turn Bluetooth Off. To fix this, charge the mouse or replace its batteries as appropriate. If the mouse connected to your Mac isn’t charged or has worn out batteries, the cursor will lag, and you’ll have an overall poor experience. Try another mouse to know where the problem lies 1.
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