I currently have an iPad Air still running iOS 7.1.2. I decided to never update to iOS 8 because of how buggy it is, and how laggy it makes the iPad Air. I hate nothing more than lag. I would rather not get a major feature but not have a laggy device. Since I won't be able to beta test iOS 9 as else I would be forced to get back to iOS 8 I wanted to ask you guys who decided to test the beta. Does your iPad Air on iOS 9 feel as fast as, or faster than iOS 7.1.2? If not, is it at least better than iOS 8? I know iOS 9 is still a beta, actually Dev Beta but still it offers some signs as to what the final OS would look like. Also how is the screen in screen feature, the one you put a video in a small screen atop of your running apps. Does it lag the OS, or causes Safari to crash?