Originally Posted by Shape
I'll test it tonight with GHIII.
I was in a Best Buy when I saw the lag difference between the TVs.
I was playing PGR4 using 1080p through component. Any fast paced game isn't going to work with motion enhancer. But yeah, a slower one might work. Still, I really strive to eliminate any lag. Gears of War lag is bad enough without the TV lagging, too.
Dled the GH3 demo to give it a try. Repeated each test a few times to be sure.
ME on/game off = 30-35ms
ME off/game off = 25-30ms
ME off/game on = 20-22ms
Being that I was using a wireless controller instead of a wired guitar, I'd expect to see at least a minimal amount of lag from the wireless connection, which seems to account for the 20ms baseline. Throwing everything else on adds another 10-15ms, which is about a frame, which also makes perfect sense due to any interpolation needing to be about a frame ahead.
Just finished playing a few rounds of COD4 with the ME on, and I had no trouble winning 1st place. Any added lag from ME is so minimal in practice that you adjust to it within seconds. I'm not sure what was wrong with your setup that you were getting a 125-250ms lag, but its definitely not due to ME or the set itself.