Originally Posted by vegggas
Take a look at the LW5600 thread. Some of us have virtually no lag or less than 40ms - Attached is a pic of mine, down to 30ms using the laptop cloned to my 55lw5600 via HDMI...
Another user made this video with no noticeable lag.http://www.avsforum.com/avs-vb/showt...2#post21826662
I just had to switch to Game mode, and knocked down settings to less than 50%, especially sharpness, and made sure all of the picture processing functions are off in all the settings and advanced settings of the Game mode video menu and audio menus.
Thanks vegggas for the info and the video. I'm pretty baffled and might wonder how much lag there is on your display SOURCE (the laptop itself). I know this is essentially untestable so I'm purely speculating and won't harp on it. I'm just not sure how 30ms is even remotely possible (unless the 55LW5600 and 47LW6500 are significantly different, which they very well might be). 30ms is about the lowest you'll find in a modern low- to mid- range TV that does minimal post-processing. I would kill to have 30ms lag.
The video posted DOES show, to me, some visible lag, and perhaps this is a perfect example of how some people just plain don't notice. Indeed the lag is low, but as an objective measure, the fact that you can hear his button press AND release BEFORE the weapon fires or whatever other action occurs indicates that there is detectable (by me, if I were playing) lag. My primary basis now is comparing navigation on the home Xbox Dashboard items using the D-pad or L or R buttons. On my older, dumb Samsung plasma, I cannot even release the button before the sound and action occur. The sound is literally in sync with my button release, and I'm talking about very quickly tapping the D-pad. In other words, the button press to display action is essentially instantaneous. This is not the case with my 47LW6500.. I can press and release the D-pad button fairly slowly (a slow tap) and only hear and see the menu action a full beat later following the same rhythm.
Samsung plasma is like 2 beats, "buh-bah" (the "bah" release of button press is in sync with menu action, no matter how quickly I tap).
LG 47LW6500 is like 3 beats "buh-bah-buh" (button press, release, then menu action, with a moderately slow tap). Not a quarter second behind by any means, but definitely a good 100ms, matching my own photo lag timer test results.
Now, I flipped inputs then flipped back, while IN Call of Duty: Black Ops, and when playing Zombie mode, the weapon fire response felt way faster than normal yesterday. I have no idea what happened or if it was an illusion or what... but interestingly, when I press the Xbox main button, to bring up the quick menu while in-game, the nav over those menu items was still slow, even with Black Ops still in the background behind the menu. This perplexed me tremendously. I'm taking this to mean Black Ops was no faster than ever, but that it was an illusion. Either way, like I said my baseline is now the main Xbox Dashboard menu navigation using the D-pad because this eliminates a lot of the subjectivity in games, which also varies between games.. and the menu was still obviously slow, even when CoD *seemed* to be responding quickly.
I will attempt to produce a video at some point, though it won't be filmed side by side because it's too much work to move one entire system over to the other room. I will instead take videos separately and place them side by side during post-production. I have confidence I can find a way to make sure I match them up within 1 frame of each other so that I don't accidentally make one video start sooner than the other, for instance.
I have also tried as you mentioned, manually turning everything all the way down or off. I detected absolutely no difference between this and preset Game Mode, either through my own perception or my photo lag timer tests. This makes me wonder whether the settings are even taking effect, which we already know for a fact they don't always (since often only some settings take effect immediately, and you have to switch inputs and go back).
I will keep tweaking but I've essentially tried everything.
One other thing I have not yet tried but have heard speculation about, is running my HDMI from the Xbox to a receiver and THEN to the TV. Unless something happens in such a path that I'm not aware of (which is certainly possible), I'm not sure how adding an extra device to the path could REDUCE the input lag. If anything, I'd expect receivers to increase the lag because they, too, have to perform their own routing and potentially image processing, but some people have reported very low lag times running through a receiver first. Guess I'll try that when I get a modern receiver (I don't have any with HDMI right now).
Thanks for the replies. Will continue investigating and hoping for another firmware update... Cheers, all!