I have a MacBook Pro and a bluetooth mouse and it is horrible when I have downloads going over wifi. The mouse stutters and lags horribly when there is a download going on. I'm thinking of getting a different mouse, like a Logitech with that small little "Unifying receiver" that plugs in to USB. I'm wondering if this will perform differently than a bluetooth mouse that communicates to the MacBook Pro built-in transceiver.