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I have an app which was built on ionic. We're using Firebase to handle all our data, with no server for now. There's a problem we've been experiencing for a long time now - the loading time of the app (exluding render time) is sometimes 4 seconds but sometimes take 30-60 seconds! I was not able to reproduce this on purpose. Not on our app and not on a clean app. However, I took snapshots of the network tab at one of the times it did happen, here they are (order is left to right): http://postimg.org/gallery/2aecew7lu/
You can see a long delay (45s?) at screenshot 8. After that the app was "released" and loaded. I really hope you guys can help. Thank you