Yep, since Adventure Awaits, specially in Custom Venues and Getaways, the simulation will stop, sims freeze but time goes on, when a couple of minutes pass in real time, everything will speed up and go back to normal only to repeat the freeze a minute later and repeat.
You see, there is no solution, just to wait for November patch and pray that it resolves this issue, the incompetence of the Sims team is so remarkable that I wouldn’t count on it.
My suggestion is to report as a bug, another one for the collection, good luck!.