I'm one of those who can't spot a difference. I've tried to with the mouse trick or scrolling and I just can't see it. I can see the difference between 30fps and 60fps but anything north of 60fps is imperceptible to me. Maybe it's from a lifetime of gaming on toaster specs where I'd scarcely break 25fps.

Motion picture film 24 frames per second, old line NTSC 30 frames per second.