I have too many families in Twin Towns and not enough houses or vacant lots to build houses for them.
My families supporting my main family are from Dragon Valley and Sunset Valley and Riverview and Twinbrook.
When I packed and move them from SV this time, I left a few households behind in Sunset Valley as there were too many Sims in that game and I had to spend too much time sitting and waiting for the game to calculate each day.
I seem to have brought too many with me again as it is still stopping to calculate but it isn't as bad as it was in Sunset Valley (2nd Edition Final) world.
I use NRAAS Porter mod to move my families around to maintain their relationships to each other.
I moved 241 Sims from the Sunset Valley game and there were about 37 Sims already in Twin Towns. A few babies have been born to Sims since they moved to Twin Towns.
The 37 Sims are extra Sims I introduced from my library. They include the family living on the beach lot with the huge basement garden.
I have now placed the boarding school lot in Twin Towns. I plan to pick up the various toddlers from around town and train them together as this gives them skills and I don't have time to do it for all of them in their individual households. It will also let me move Sims from other age groups in and out of that lot to give them skills or other game play experiences.
When I moved my Sims from Dragon Valley to Sunset Valley I packed and moved about 310 Sims so I do have a few less in Twin Towns.
I'll have to be careful about not adding any new Sims from my library.