On a Samsung Galaxy Note8... The bar doesn't even begin to load. Uninstalled, reinstalled, tried again, nothing. Runs fine I my old Note II.
Solution: found the root of the problem. Uninstalled game from Samsung's Game Launcher suite, restarted the phone and the game runs fine. If reinserted inside the Game Launcher suite problem comes back.
Update: Game requires reinstalation every time I have to run it.