Hello, I have a cheap run of the mill BT USB mouse and an genuine Apple track pad. When I scroll in a text editor or a web page, it scroll smoothly. But if I scroll on the middle button of the mouse, it jumps up and down like crazy, drives me nuts. 
Is this something I can fix? I tried differentt king of settings on the mouse preferences, Clean the scroll wheel, nothing seem to work.
if not, can someone recommand a mouse that can scroll smoothly? Perhaps get a cat. Thanks.
Mac mini sierra 10.6.12
Is this something I can fix? I tried differentt king of settings on the mouse preferences, Clean the scroll wheel, nothing seem to work.
if not, can someone recommand a mouse that can scroll smoothly? Perhaps get a cat.
Thanks.Mac mini sierra 10.6.12