My online is so slow when I go online and play Gears of war 2. I move my stick but until 5 sec later it moves on the tv. I know it’s the tv not the lag. Even when I am not online. I also have the new xbox 360 slim. What should I do? I have a Toshiba 46″ style 46g300u3. Do I need to buy a HDMI cord?Please please help.