Magic Mouse too slow
Magic Mouse A1657 Moves very slow horizontaly, vertical movement is OK
Mac mini, macOS 13.4
Question marked as
Have you tried cleaning it? See the following from How to clean your Apple products - Apple Support
If your Magic Mouse or Magic Mouse 2 isn’t tracking properly, there might be a hair or other debris on the sensor lens. Turn the mouse over and inspect the sensor window using a bright light. If you see debris, use compressed air to gently clean the sensor window.