Guitar Hero Lag Issue

[Flashbaak]

Hey, I've been around this forum for a while, but never really had anything worthwhile to post, but like many others, I noticed a frustrating amount of lag on my hdtv with Guitar Hero III. For reference, I'm using a Sony SXRD A3000. I recently replaced my Panasonic Pt50lc13 with this tv. After a frustrating night trying to play GHIII on the sony, I moved over to the panasonic, and it worked like a charm. Determined to fix this issue, I played with my settings - to apparently no avail. However, today I switched from HDMI to component on the sony, bingo. Plays like a charm.

As many of you might know, it's a pain to switch back from one display setting to another. Any insight into why HDMI would cause extreme lag while component would work fine?

I hardly ever visit AVS due to the extreme HD dvd bias there now, but is this a more relevant issue for that area?

Thanks in advance,
bk