Flip size que 0 was removed in the drivers years ago, even when setting it with att. The drivers have a min of 1 simply put. Just what nvidia are tryhing to do now. Also I, and a few mates of mine that where at the very top of the q3 scene, would say that there are lcds that are just as fast as crts. Mine is 2 ms iirc. The reason you might notice a difference is the same reason its easier to detect difference between 60 and for example 120 hz on a crt than on a lcd. The frames are rendered differently.