The only two worlds I'm aware of having major problems are Isla Paradiso and Bridgeport.
There are ways to work around or fix both of them. With IP it's poorly made and sims get stuck everywhere. With Bridgeport, I think it has something to do with the multi level buildings and sims going up and down using the lifts. I rarely play in Bridgport for other reasons, so don't have much experience with it. I play in Isla Paradiso often but have a fixed world in my game to replace the version that came with Island Paradise Expansion Pack.
She has fixed other worlds too. Here's a link to her fixes. You might find something there that helps.
https://ellacharmed.wordpress.com/2013/10/05/isla-paradiso/
