Worse update ever

After last update the game works really bad on iPhone 5S, iOS 8.4.1. Worse graphics, much lower fps, it is sometimes hanging too. I am really disappointed, because Ive played this game a lot and after this update it is nearly unplayabble for me.
Instead of bringing me fun it is annoys - and made me write this complain. Please fix it.

Chipokopter about Alto's Adventure, v1.2