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I will try it on my Air 2 first because it can't make it any worse than it is but I will wait until I'm home again to update through iTunes.

Even after a DFU restore to 9.1 my air 2 is like something from android years ago.
 
9.2 Is impressive on Mini 2. runs alot better than even 8.4.1. useing Air 2 and 6 plus though, also runs very good :)! control center lag has totally disapeard on my devices
 
I got a i6s about a week ago and was using 9.1... The performance was great, all animations were fast (home, folders, multitasking, icons, etc). Occasionally the status bar would disappear for a second or so and the search bar got misplaced once. Apart from that, it worked great. I'm using 9.2 now and... well, the phone is still fast but the folder animation seems slower. If I try to open a folder with more than 1 page it's noticeably slower than a folder with 3 or 4 apps in it. That wasn't the case with 9.1. It's kinda irritating cos 9.1 didn't behave like that. But apart from that, the phone is fast and the search bar and status bar work fine so far.
 
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