I'm using 500GB Buffalo MiniStation TurboUSB 2,5" HD and I have a lag problem with Guitar Hero Metallica (NTSC) and COD5 (NTSC and PAL). I have tested COD5 in online multiplayer and it's not playable because of the lag. The same game works fine from DVD (Wiigator loader) in online mode, so it's not network connection problem. Guitar Hero has similar problems. The song does not lag, only the graphics lag from time to time. Is it possible that the reading speed of my HD is too slow for these games?