Freezing, Lagging, and Looping

Playing on xbox.  Recently purchased the rancher expansion, then pre ordered the royalty and legacy packs.  Since I got the rancher expansion my game began to lag a little here and there.  When the royalty pack downloaded it got worse.  The game freezes or lags where the sims just stand there doing nothing indefinitely.  I have to go to build mode or manage worlds to reset.  I know there are cheats to reset sims, but it is very inconvenient to do so on a console every few minutes, and I don't think I should have to.  Because it really is every few minutes.  Also, in the royalty pack my sims consistently get stuck looping in the secret passageways.  The more secret passageways you have the worse it is.  I ended up deleting all of them for that very reason.  The lagging and sims getting stuck just standing there for long periods of time is driving me absolutely crazy though, and I don't know how to fix it.