a hair slower? I drag it from one side of the screen to the other and get 4-6 frames despite my monitor being 240fps. Perhaps its just more engineering to push people off firefox?
Didn't seem nearly that bad to me on Firefox. It's fairly smooth; just kind of laggy, but in a way where it was hard to tell whether it's an optical illusion. Otherwise doesn't appear to have any fewer or more frames when swiping around than the OS cursor.