I suspect it matters less on consoles where you are trying to move/look around by pushing a tiny little joystick with your thumb. With a mouse though it is absolutely crippling. Even minecraft is painful at 30Hz with a mouse.
"Crippling" seems a bit hyperbolic. I'd reckon most PC gamers probably don't even notice, though once you start noticing it's hard to "unsee" it, but that doesn't make the game unplayable.
If any of you have Dark Souls on PC, with a decent graphics card, use the 'dsfix' mod to toggle between 30fps (the default) and an unlocked 60fps mode.
It's night and day - suddenly the game becomes that much more fluid, and when toggling between the two, 30fps feels amazingly 'shuttered'.
It to me is crippling to the point that I will stop playing the game.
I used to play quake 3, particularly defrag, at 125Hz. 60Hz in normal games is fine to me but anything less feels like a nightmare where your legs turned into concrete and you can't turn your neck. It very honestly is an unpleasant experience to me.
Those people were talking about FPS games. Diablo's point-and-click interface is not as immediate and while it does benefit from going beyond 10 FPS, you won't see too much of a difference from 30 to 60 FPS.
