Im pretty sure this is software related as the 5S is the fastest phone currently and would be able to handle anything really. Anyway, on the camera app in photo mode... When you put on filters, but dont select a filter, when you turn the device suddenly or shake it a bit it will stutter significantly. All 9 filters will stutter. Its quite annoying. Even when you are not moving suddenly it randomly happens. Im guessing this is just a bug. Anyone else experience this? Also is it worse on older iPhones. EDIT: Wow just tried it on my 4S... no stutter. WTH. Anyone with 5S' experiencing the same.