3 times now I have got to level 29 then freezes

I have tried this game 2 times now wanting to get the best times I can so I restart and play the same level until I beat the time. I love the game but after I get to level 29 everything just freezes.

Is there a patch for this or a way to clear caches if I have filled them playing the same game until I get the time I want?
It is so frustrating , I want to get the best times but maybe I should just go through again without trying for starsor times but I think that defreats the purpose then of playing the game the way I want to.

I hope you have some answers for me.