I have the exact same problem! If Apple dont fix this **** soon i am going to be really ******! Seriously, What the freaking problem! I have paid a lot of money on this MBP and then i cant even connect my mouse? The mouse works perfect on a Windows based computer. Maybe i should get the
** out of this MBP and get a computer that can simple things as being connected to at mouse!
Is your mouse a USB mouse, RF mouse, or bluetooth mouse?
I routinely use a USB mouse and trackball without any lag problems. It seems like your mouse may have some driver issues. You may want to check the manufacturer's website to see if they have special drivers for the mac.
My problem was solved 🙂 I wrote a letter to Roccat (the makers of my gamer-mouse) they suggested that i connected the mouse to a PC and then did the driver settings there and then the mouse would remember the settings 🙂
Thanks for the response in here 🙂