I used to see this every now and then with SDK1 (pre scenegraph). Also, the app would keep downloading segments of video endlessly, the entire HLS playlist. Nuts.
Neither of these 2 vague descriptions ring a bell, i am afraid.
SolveLLC - i am inclined to think yours is an app error, hammering on the server.
tim_beynart - give us a MWE, so we can investigate.
It's vague because there really isn't any way to debug what's going on that I can think of. What I have seen however....The app runs for a long time, hours/days, the app is still running but the screen saver has taken focus. On button press the screen saver disappears and the RAF loading screen is hung.
It's not an app issue in my opinion as this has happed on both SDK1 and SceneGraph applications.