After using IOS 7 for a few days, we seem to notice slow scrolling (smooth and then stalls for a fraction of a second) while using Safari and Mail. Also web page buttons seem to have enough lag to occasionally cause double pressing.
PopHollywood (770077) writes "Is IOS 7 slower that old 6? After upgrading, myself and a few others notice slow, choppy experience when scrolling, changing apps, etc. is this comon?"
(My vote for a better question).