You NEED to add a quality switch. There are lots of people(including me) who lag badly and crash whenever youre going to win. Adding this would make the game more fair, because you could reduce the lag. One of the worst experiences with this for me was when I was about to finish off a tower in sudden death, and the win would get me in legendary arena, and I crashed. After that, I was matched up with only trophy droppers who were climbing up again, and really experienced players, and then RIP 200 trophies and my chance of getting into legendary arena...
Private name... about Clash Royale, v1.8.1