The iPad 2 isn't supported anymore, the moderators have confirmed it here: https://care.king.com/en/candy-crush-saga/loading-crashing-issues-android This is probably why the games are not running as they should. Ummm... I have no clue why a response about ANDROID has anything to do with an IPAD running APPLE IOS. Still…
I was having the same issue with Candy Crush Soda and, checking the iPad out, found that I was very low on available memory. Off-loading a bunch of videos and photos from my iPad and opening up available memory may the games much more stable.