im on an iPhone 6 so I can't speak for 6s. upgraded to 9.0.1 I notice not that when I'm in an app. and I hit the home button to go to the home screen, I notice the "fade" is lagged but my issue isn't just that. after it fades to the home screen and I immediately press another app icon. it doesn't register. I have to usually press it twice. not to play devils advocate I might be being a little picky but it's def noticeable to me. when I hit the home button to exit an app its usually because I know what app I want to go to next and I'm so used to my layout I hit the icon immediately so I'm doing it fast but it doesn't register. I can almost guarantee this hasn't happened prior to the update because I'm not doing it any faster than I normally would. anyone else notice this?