Optimization? Okay, the game could be good, but it seems to lag. Using a moto x play, which can play asphalt 8 without issues. Other than performance, the controls don't seem too responsive, and the FOV should be adjustable, specially since as is, you have to turn all the way to see if there's another corridor to the sides,and turning + laggy controls is a BAD combination.
Pure puzzle fun: Help Jimmy the Taxi Driver find the best way through traffic!