and it looks like ios 10.3.3 will be the final stable release for 5s and above. i use both SE & 5S and the difference is very visible between two devices. SE can run ios 11 without any problem.and maybe ios 12 too. but 5S started to stutter with ios 10, they'll polish as much as they can do. and finish iOS 10 era.
did you try the new beta? any issues so far?
Little correction, iOS 10.3.3 is the final release for iPhone 5, iPhone 5s will get iOS 11.
I haven't experienced any issues so far, didn't experience any issues on the iOS 10.3.2 either.