The house is full! I've got 2 elders, 2 adults/young adults, 3 infants, and a single dog, lol. The infants and dogs happened when I was playing with a different household, so I came back and was quite surprised to see a full house.
yes its quite similar. from the sound of it, their sims will unfreeze or freeze at different times. all mine do so at the same time and don't seem to unfreeze at all.
@JMoldypotato Could you try if it gets better if you turn off autonomy (for testing)
There's also this issue: https://answers.ea.com/t5/Bug-Reports/Can-t-switch-between-Sims/td-p/13907460 but I believe that's just a symptom of the freezing,
