I'm not gonna start getting into the huge, fiery, personal arguments that many on these forums seem to get themselves into. I'm just here to add my personal experience and ask a simple question. It's beyond me, in all honesty, why our culture nowadays dictates that any discussion online, even one as simple as observations about OS issues, become huge shouting matches.
That all being said. I'm using the GM of 9.0 on my 6 Plus, which I updated directly from 8.4.1 (I don't dabble with beta so I went straight to GM) and I am experiencing three obvious issues: when clicking the home button (or power button), the display often takes an extra second to light up, which makes it seem as if the click didn't register at first; when tapping on an app, it takes an extra second to launch, which I didn't experience before; and finally, the app switches is very laggy, with the animation stuttering when scrolling and swiping within the switches.
None of these issues are appearing on my iPad Air 2, which is also running the GM.
And I suppose my question is, has anyone here experienced a real improvement after restoring their iPhone 6 Plus as new with the GM? I'm not a stranger to restoring devices as new (I did it with iOS 8 because of an unrelated issue), but honestly, I'd really rather avoid it because I don't quite have the energy to deal with a clean restore again this quickly and with the Apple Watch you're essentially then required to restore TWO devices as new and it's kind of a headache. I know those are all first world concerns, hahah. I just feel like I'd rather wait for 9.1 or a future update to fix the issues.