Used to work until the last 2 updates.

The previous updates to improve the look of the game has made mine very laggy. When starting up my game itll freeze up and close. The second start up I get a little further but the same thing occurs. By the third or fourth time the game is finally working as it should besides the occasional game lag when switching from the normal screen to the Pokémon captured screen.

Webster2500 about Pokémon GO, v1.31.0