HDTV and Online Gaming Lag

[evildragon]

When you say supports 480p, do you mean it displays 480p natively or upscales 480p to 720p?

Can you give me the make and model of you HDTV just incase your not sure? I'd like to help, but I gotta know what HDTV you have so I can check out the specs.

I don't believe there should be any lag if your TV's resolution is set at 480p and Halo 2 outputs at 480p. Change your TV to 480p if you haven't already done so.

I'm sure the TV scales up. But the problem is that the Xbox is outputting so much detail, it slows down the CPU.

He needs to read the manual that came with the Xbox to change the resolution. It's in "Display" somewhere..