Board Thread:Game Discussion/@comment-18927940-20130914024113/@comment-17978923-20130914201142

You can try uninstalling/reinstalling Bluestacks/TFL apk/or make the game display a smaller size. I'm not really sure, lot's of people have this problem apparently and not many people know exactly why. These are some "supposed" fixes that I found on forums. Another problem could be is that your computer may be too old/slow internet connection/etc.