I want to change my statement i feel my ipod touch 5 and the ipad air 2 a little slower now.
lol the air 2? If the air 2 slowed down a little then the Touch would slow down a lot.
the Air 2 doubles in performance in every category of the Air 1. lol the touch is nearly the same internals as iPad 2.
your statement does not compute
Ha, do you think theres only 1 ios version for all apple devices? Ha ha, no, the one the ipad air 2 gets its not the same the ipod touch gets lol.
Ios 8.4 is affecting the performance on both devices plus is buggy (specially on the ipod touch). Nothing new with each major ios update.
iOS 8 seems faster on my iPhone 5, around the same on my Mini 2 and after a clean install and restore in iTunes, around the same if not a little slower on my iPad 2.
Videos I've seen of the 4S on 8.4 would indicate almost identical performance, and since the Touch 5 is so similar, the same thing should happen (though the video was of a clean install of both iOS 8.3 and 8.4)