Usually the HID mouse driver is the biggest problem, Logitech mouse drivers are the WORST by far, the Microsoft HID driver is average in responsivness, the buttons work correctly for nearly all games, I got a saitek control pad and it came with HID keyboard and mouse drivers, it improved mouse responsivness somewhat over the microsoft drivers, BUT.. it still felt laggy vs. my very first MS Intelimouse Explorer mouse (which i also had plugged in via USB)Originally Posted by oshta