[Ygg2]

You can notice higher frame rates if you're in a competitive FPS, not a code editor. Unless you are playing CS2 in Emacs.

[iotku]

Properly levereged GUI editors have the potential to use the extra refresh rate for smother animations/smooth scrolling, though that's pretty far away from Emacs territory.

[varispeed]

Choppy scrolling adds to the feeling of walking through swamp.