[quote name='DIMONDA85']Is it an LED backlit LCD? Cause if it is it should calibrate like any other LCD.[/QUOTE]
Yeah, it's a Samsung. I don't know why, it just has some lag. It also has a little bit of motion blur too, I can't figure out why. It's a 46" 6400, which was a costco exclusive. A step down from the 6500s but above the 6300s they had at Best Buy earlier.
But we have a 55" series 8000 in the living room and it has lag too. They're both good tv's, but I've heard Sony and Samsung have so many processors going on with the LEDs they cause input lag. I heard it was akin to the XBR4 which suffered the same thing, and it was the top LCD of its time back a couple years ago.