Yes, iOS 11 was total garbage.
I avoided it like a scourge to my iDevices. IOS 11 was FAR worse than iOS 8, which is the one I avoided, as well, and why I think my 7-year old iPad 2 is running iOS 9 so much better than anyone else that had installed iOS 8 previously on older iPad 2 and 3 models before upgrading to iOS 9.
Both iOS 8 and 9 , for most iPad 2 users, really hurt the performance of that device.
My iPad 2 seemed to fare a lot better on iOS 9 by simply skipping iOS 8.
On my iPad Pro, I waited, pretty much to end of iOS 10’s update cycle to update and my iPad Pro is been running very well with it!
Not ready to give that performance and stability up for two very bug-laden iOS versions that came after.
Although iOS 12 seems to be better of these two.
Maybe “lucky iOS 13” will be the ticket for me and my three year old iPad Pro.
See, I am willing to wait out these problematic iOS versions until I think something better has, finally, made it!.
I am tired of Apple making the general public its beta testers.
It’s that simple for me.
Have you done anything to help improve the performance of that iPad Air 2 on iOS 11?
Why not just acquiesce and perform ALL of my perofmance tips in my user tips that I post on a regular basis.
Whaddya got to lose at this point.
There maybe items in my user tip that you haven’ t tried or put to complete use.
Slow iPad on iOS 9, 10 or 11! - Apple Community