Maximum Number of Playable families per apartment lot

[LOolyharb]

Is it possible to make a hack to change that limit? Because I was just thinking why not I mean why should it cause a lag in the gameplay when the game actually treats playable families B,C and D like NPCs when you're playing family A. Why can't it be done?

[J. M. Pescado]

UI limitations forbid it. Also, the time involved in loading and saving, as well as data access, increases geometrically with the number of families on the lot.

[seelindarun]

Is the increase geometric by the number of families, or sims?  i.e. Is there any difference between 2 families of 4, or 8 families of a single sim each?