With the latest release of iOS there have been some performance implications for Hybrid Ionic Applications. In particular, animations around page transitions seem glitchy and sometimes never transition entirely. The problem seems to be around the ui-routing angular module. The temporary fix is to include the following ios9-uiwebview module to patch this issue. To fix your hybrid app, start by adding this file (angular-ios9-uiwebview.patch.js available at https://gist.github.com/IgorMinar/863acd413e3925bf282c) to your solution and reference it in your index.html page. Next, add the following dependency to you base app's module.
angular.module('myApp', ['ngRoute', 'ngIOS9UIWebViewPatch'])