问题
I am calling [self.navigationController pushViewController:controller animated:YES];
and it works just fine, but there is a delay in how long it takes to present. The controller is just a simple blank tableview. This view is being presented as a normal push.
回答1:
Found the issue thanks to instruments and @dasdom. Apparently there was a animation going on at the same time that was causing issues.
来源：https://stackoverflow.com/questions/23790678/slow-transitions-on-presenting-a-viewcontroller