Here are some suggestions that may help, including links to a couple of mods by Simvasion.
The July 23 game update was supposed to have fixed the issue of N.A.P.s enacted in other neighborhoods impacting your active neighborhood. Do you have Eco Lifestyle? Are you finding things are going missing? Are NPCs constantly doing things like playing with future cubes, drawing tablets and baking cakes, among other things? This is probably caused by Neighborhood Action Plans (also known as N.A.P.s) that are currently in place.
