Why is my mouse lagging so much it's impossible to use? I've a little logitech mouse, and suddenly, with no reasons, it started to lag heavily, and now it's impossibile to use. I've a MBP mid 2012 13'', and never had problems, but now it is unusable. The mouse is ok, i've tried it on another mac and it works fine. I've already tried to reset the controller, but nothing changed.

I really can't understand what could  be the problem? when i restart the mac it works fine for a while and then restart lagging.

Any ideas or similar experience?
I had a similar problem with my 2011 17" MBP and Apple magic mouse.  Frustrated the hell out of me.  I turned off Handoff (Continuity) on my iOS devices and the problem has since disappeared.