Ideas
Do you still want saves? I don't use mods or CC. I have all the game content that has been released. I've already repaired the game about four times since the update on the 18th, and the problems continue. NPCs enter my house uninvited and queue up actions with my own Sims. You can't cancel them, you can't “send them home,” you can only wait for them to leave.
In addition to this problem, I also have issues related to babies (I think you were also asking for saves for this problem). They stop moving, milestones are not achieved even though the balloon appears indicating that a milestone is being reached. With toddlers, I have to perform the desired action twice because the first time both the Sim and the toddler freeze without doing anything, and there are several other freezing errors.
If you need saves, I'll share them with you. Can I attach the link to Google Drive here or send you a private link?