Title explains it all. Try turning it off, you'll see certain things are now quicker, maybe don't stutter at all. This thread was at the top of /r/apple. I have noticed improvements in certain parts of the UI on my iPad Air. Why include this when it's clearly effecting performance. It's been quite a while since the effect was introduced with iOS 7 and although things have gotten better they're far from perfect (I'm sure people with 3rd gen iPads remember the hit to UI performance iOS 7 was). One of the reasons I got really into Apple products was the smooth UI experience. It was 2010/2011. Android was a joke at the time and seeing the iPad 2 on iOS 5/6 perform so smoothly compared to anything android really left a good impression on me.