Performance

Hi to all, i have a strange situation in my work, i have done an app with ionic 1, in the emulator for android and iOS works good, also with Real device like iPad air 2, also on different android tablet. The Real problem come After publish in appstore, app compiled trough xcode without dsym and bitcode. Download and install ok but the app is woking bad, orrible performance also in Easy procedure, very slow in every situation. Can be xcode or i must search something else? I have tried with the last version of xcode. Thanks for support