What's the best Bluetooth dongle for gc2, tgc set up to cut down on the lag from impact to result???. I have a targus 4.0 and the computer is only 2 ft from the gc2. Im experiencing about a 1 sec delay.. if I could cut it down to .5 it would be great. Or is is it just the way it is no matter which dongle you use??? The closer to instantaneous the better..