@DuoTuna MCCC is a Mod, not a pack.
I need a screenshot of your in-game settings please
Not sure what the definition of a medium household is in the game, it's subjective 🙂 Are the sims in the household doing any particular actions when you get the fps drops?
Follow these steps to create a new clean Sims 4 folder, free of all your current user data. Start a new save and see if the fps drops are still present
https://answers.ea.com/t5/Mac/READ-FIRST-Sims-4-Mac-Help-Guides-and-Troubleshooting/m-p/4612394#M163 
