Corrupted Lots

For the past few months I have been running in to a lot of lot corruption. Specifically with rental lots and the Stonestreet Apartments in Evergreen Harbor. It seems as if I have "too many" gallery lots or one too many sims in my world that's when the lots will become corrupted. It doesn't even seem like I have that many builds or families in game. I have never had this problem until a few months ago. Is anyone else experiencing this? And is this something that I can fix?

Yes, I play with mods and CC.