Play mcpe for about 30 seconds on iPad 2, freezes and then goes to home page.

I can't play mcpe on my iPad 2 because the screen freezes and then goes black, then goes to my home screen after about 30 seconds of play. I'm using an iPad 2 running iOS 9.3.5 and updated mcpe on to the latest version. This was happening before the mcpe update but I could play for about half an hour before the screen went black and goes to the home screen. Why does this happen? Please fix this issue.