Unable to load worlds that are big

I am unable to load my world "Jowee-seven". The last time this world was load properly was before Version 0.13.1. Now when I load the world, I still get in but it is very lag. I have tried degrade the graphic but it have not helped me. Below is an image of my menu showing the file size of that particular world. And I would like to get a respond from you guys. Thank you for the good work of maintaining this wonderful game.