What do you mean by "resolution-related"? And it's not unusual for major OS updates to trigger hardware faults, either because they do something a bit different

What do you mean by "resolution-related"? And it's not unusual for major OS updates to trigger hardware faults, either because they do something a bit differently, or because the older OS was simply masking the hardware fault somehow. And FWIW, I've never heard of anyone else complaining of graphical glitches after upgrading to iOS 10. And if I search for "ios 10 graphics glitches", the only relevant hits are some complaints about minor glitches with the new UI for notifications (I assume that's not what you're talking about, and I also assume these minor glitches have been fixed).