Dragon blast and dragon-breath potions in excess, make the game slow.

Very lag when the dragon casts several blasts of the dragon.
When there are many Dragon Balls next to each other, the fps of the game is only 2 to 4, this happens when I go to face the dragon in the end, he casts so many bumps that my game is so slow that I can not even walk. Samsung galaxy j3. 1.5GB of RAM. This also happens when more than 4 dragon-breathing potions are played.