objective c - iOS SDK 7.1 with iOS 8.1 generating slow behaviours -

objective c - iOS SDK 7.1 with iOS 8.1 generating slow behaviours -

i'm building app sdk 7.1 while running on 8.1 environnement. works fine except when i'm loading view contening scrollview lot of elements, cause take long time before view scrollview can appears. more elements on scrollview, longest time have wait before appears. can't post code here because can't find problem seems happen between viewwillappear , viewdidappear of view scrollview.

fyi, scrollview display custom uibuttons images within (no text).

also, tried compile sdk 8.1 while running on ios 7.1 , worked fine.

i know it's not precise maybe missed of import ios 8.1

any guess ?

thank in advance.

ios objective-c iphone sdk ios8