Right, that should be imperceptible. The 240hz monitor was also 15" while the 480hz monitor is 27". I'm sure that contributes as well. My subjective experience

Right, that should be imperceptible. The 240hz monitor was also 15" while the 480hz monitor is 27". I'm sure that contributes as well. My subjective experience is that I now just have a lot of more time to react.