Flew on iOS 11.2.1 first time today. Seems to work ok. Using iphone 6 with go4. Video latency while flying but no worse than it’s been since iOS 11 first came out. At latest firmware 1.04.0100 and app version 4.1.18. Time for a newer faster device!
The go app has been crashing for about two weeks now every time I open it cannot fly a drone. I updated iPhone to the latest version last night flew the drone with no app crashes edited the videos with no app crashes. The new iOS Seems to have corrected the issue.