After updating my iPhone 6 to iOS 11 and having returned from a trip I want to share about 500 Photos (including 4 videos). This is pretty straightforward. I select my 500 Photos, click the arrow and create a new photostream... iOS 10: the spinning connection wheel turns indicating an internet conection and the stream is created after a minute or so and I can share it. iOS 11: the phone gets very hot and the app crashes after like 40 seconds, ..no other app will open, if I could access activity monitor on iOS it would probs tell me 100% CPU or something. (I have then reset my phone and tried again -> same story) Downgrade?