This game is heavily unoptimized for mobile devices. Whenever I tried to duel, it lags terribly and sometimes crashing, and it even makes the ranked duel unplayable. My device is OPPO RealMe C15 which it should be able to run this game without any problems. Duel Links can run fine without any lags and crashes on my device, but not this game. I tried it on Nintendo Switch and it easily heats up. Until Konami can do something about this, I do not recommend this game on iOS/Android/Switch.