I have a well built desktop with plenty of memory space, and a good graphics card to go along with it. Sometimes the game lasts long enough for the sims to get rested and wake up, but it crashes shortly after. While they are sleeping, the game completely crashes and I get a popup saying the Sims 3 has stopped working. Right now in the game, it is night, and I am having the two sims sleep. But in France, I have just a couple sims with me, both are completing adventures. So far in World Adventures, I have traveled to China 2 times and I am currently in France. I have Late Night, Ambitions, Generations, and Pets as well.
I just recently bought World Adventures with Supernatural. I have seen many posts on the Sims 3 Forums about crashing while traveling to other places in World Adventures, but my game crashes maybe on day 1 or 2 of my vacation in Champs Les Sims.