You could try to enhance the games functionality by:
a) Having as much free space on your device's memory as possible and not multitasking when launching the game
b) Updating your OS version and using WIFI when updating or launching the game
c) Clearing game cache
d) Restarting the device every now and then to release some memory
新機能
ハロウィンアップデート:無料報酬&スムーズな戦闘! RS Boxing Champions で、最も不気味なシーズンをお祝いしよう!