Awesome Game but its freezing on me.

I love this game. I would highly recommend getting it. But I am on the largest world (desert) and the game is running choppy and keeps freezing and crashing. Now I cant even get it to run. Im on an iPad Air. Just an FYI, my issues started on the large world. The other two worked perfectly fine.

Teenexx about Craft The World - Pocket Edition, v1.0.004