Sims needs decay very quickly

Since the Adventure Awaits pack my Sims' needs have been decaying very quickly, especially bladder, hunger, hygiene, and sleep. I had a child sim whose bladder need was yellow, and it continued to decay even while she was using the toilet. When she was done with the toilet, magically her hygiene need went from yellow to a full green bar. Ever since the expansion pack, my poor Sims have been starving, exhausted, and about to pee their pants. 

I'm playing on PC, no mods or CC.