This game is definitely not optimized for mobile. The cards are so small. Every plays feels a bit sluggish even with the power management slider all the way up. The trees on the side keeps flickering and bugging out (careful if you suffer from epilepsy). The game itself look like the 360p version of the PC game even on a phone with a 4K screen (not good to look at). Compared to Duel Links which runs nicely on both pc and mobile, this mobile game needs a lot of improvements.