did you restore any app data from titanium backup? reinstall and it should be back... although you might have to start all over
because devices varyHow the hell is that some users report unbearable lag while others claim the game's running smoothly? Weird.
or, you can root your phone (since you're already surfing XDA forums).I find the adverts on the new version a lot more annoying, so I play with Airplane mode switched on. I'm surprised they haven't released an ad-free version yet, I bet many people would pay $5 for it.