Open Level crash on mobile after Update

Resolved my Problem.
I copied my Content Folder in a Blank Project and the packaged Game now works also on my iPhone 6.

Im working on a Mobile Game which worked fine on every iOS Device till I updated to 4.16.
Every time i want to open a level it crashes on the iPhone 6. On newer phones it works well but needs a lot more loading time than in 4.15. On Older phones it works sometimes and sometimes it crashes.
The new features in 4.16 for mobile are awesome (Especially the better graphics and the HUD) and I really want to use them.
Is the new Version really that performance costly?
I had to go back now to 4.15 which is really sad.

Sorry for my english.
Thanks for any responses.