I have an Xbox 360, second generation, and I just bought a new TV. it is the same size as my old one, but the new TV now runs HDMI. I use HDMI for audio and Video, but there is a slight delay between the Xbox and TV. When I press a button there is a small delay, maybe only a few milliseconds, but It dulls my reflexes and makes me overturn. this makes on-line gaming nearly impossible. What is the cause of this?