To say this game is a technical mess would be an understatement. Frame rate is constantly poor and often dips even lower. Resolution is horrid. Distracting pop-in. Low-poly models and cut animation frame rates at easily noticeable distances. Some menus take too long to load. The camera clips through world geometry. Animations occasionally glitch out. Its embarrassing how unpolished the game is.
There's a whole host of other problems and personal gripes I have with the game as well, but whats most frustrating about it all is that the game still manages to be a lot of fun.
Become desensitized to the poor performance, and you'll be adventuring through the world discovering Pokemon, fighting trainers, and earning gym badges. Character/Pokemon design in the series is typically pretty good, but this generation has some real top notch stuff in both aspects. The three paths of the game are just different enough and bouncing between them as the game goes on keeps things interesting. The characters and writing are both really enjoyable, albeit not ground breaking. I was engaging and entertained for hours on end despite many frustrations.