Sims are making evil/mischief interactions randomly

I had this exact issue. I had to go through and do quite a fix because it wasn't a bug perse but residue from previous naps. It was destroying my game because they were mega mischief and mean to each other

I removed all mods and cc to desk top
Deleted the cache
Did a repair
Restarted the game with mods and cc out
Repealed every.single.nap.in.every.world
Deleted every npc sim from manage households (you know the background sims not like.. the Goths etc) because they were "infected" by the naps and would cause mischief etc
Disabled NAPS fully in game options
Saved
Exit
Restarted
Dropped my sims mischief levels to 1 if they were over level 3. Most weren't above 2 so this was quick
Save
Exit
Place mods and cc back in
Restart
New npcs filtered

The problem went away

Process took about half an hour
Maybe that'll help. Goodluck! It drove me insane