It seems most get under 20ms lag when put into game mode, which I'd think is what matters to most people. At that point, when it isn't daisy-chained with any other lag (so a wireless controller delay will make a difference), it's imperceptible to me. I am not a professional gamer though, and from what I understand the higher refresh rates that pro gamers use (such as a 240 Hz monitor) have measurable improvements in their performance as gamers.