Weird Gears of War HDTV problem

I understand Gears of War has some issue with VGA output, but I was wondering if anyone knows why it constantly triggers the “info” box on my HDTV to come on (the one that pops up when it switches resolutions) while playing? This is with VGA cable to a Westinghouse 1366x768-native LCD. It does with if I’m running native or at 1280x720.

Other 360 games don’t do this at any resolution.