>>712841118Everyone notices it.
Play Quake 1 for 15 minutes at 144 frames per second and then reduce it to 120 frames per second. You will immediately notice that the movement is no longer "smooth". In fact, this also happens if you're playing at 170 frames per second and drop it to 144. Your brain simply gets used to any frame rate after a while, and you'll only really start to be unable to see the difference when the frame rate is extremely high. Something like 1200 frames per second, and then limiting it to 1100 frames per second, you probably won't notice anything, but when we're talking about 60, 120, 240, even fucking 500 frames per second, any human being is fully capable of noticing the difference.