Help! Foreign Sims Won’t Age! (Nraas Traveler)

Liam used to live in Riverview, but he moved to Monte Vista, leaving his extended family behind. Now, weeks later, he’s an elder. I had him visit his family in Riverview, only to find that none of them had aged!!! His toddler niece was still a toddler and his cousin (who was the same age as him when he left) was still an adult! Also, his brother had died of old age, but wasn’t even an elder! And the game was running REALLY slow, like, 1-2 FPS. I had to restart the game because Liam had been asleep for, like, 10 real-life minutes, and it wasn’t even halfway through the night.

I’m using Nraas Traveler and Ageless Foreign Sims is disabled. (I double checked before he moved!) What could have happened and how can I get the family members back to their proper age?!