Iphone 4s with iOS 8.0.2 too slow

Question

Iphone 4s with iOS 8.0.2 is not fluid. The software is not fluid. It is necessary a faster or a lighter version of the operative system for iPhone 4s: if the requiremnets are too high for iphone 4s it is better to use iOS 7.1.2 . My feedback on iOS 8 on 4s is not positive and improvments are necessary: in future do not allow the download of a software on a phone that can not support it. After the release of iOS 7 a year ago i had the same problem: only after some updates the lack of fluidity was fixed.

Answer 1

iphone 4s, is update 8.0.2
for me, this is not just an internet issue. I'm running the iphone network connection on DSL wifi
and cable wifi. The problem is persistent regardless of time or the wifi network i'm connected to.  Additionally, there is general slowness that is experienced:
1. when navigating any scrolling screen whether in an app or on the settings function, the screen freezes for 1-2 seconds and then appears to move.
2. when switching between apps, the iphone back-screen goes black, then the app to which I have switched to, reloads.  This is problematic in that I lose data and progress (for example when switching between notes and safari) - this should not happen between programs that do not use much memory to run.  I leave 2-3 gb empty on the phone.  Additionally, I frequently "close" open programs on the task switcher, and i do not allow many programs to update in the background, nor do I permit location services on many programs.
3. When using the copy function, I cannot copy over its last contents - the prior contents appear to be frozen there, such that when I try to paste new material, the older material pastes.
There is no way for me to go back to is 7, which was much more stable for the iphone 4s.
To the apple engineers: if an system update is not optimal for a certain phone hardware, please warn users on the update screen that it is such, or that it is has not been tested for that particular phone model.
Thanks