Thanks for the suggestions. I have tried both of these things but I am with you..frustrated. This was one of the EP's I wanted to try because you can't deep sea dive and find mermaids in any other town (that I know of) so I was looking forward to playing in that town. It looks like, for now, I can play other towns, but I still have lag and freezing issues - that I can deal with. But it's still disappointing that EA made a Sims 4, and still can't fix the bugs in Sims 3, don't you think?