I’m planning on temporarily moving more than 8 sims onto a lot for storytelling purposes using MCCC, and I want to create a separate copy of my save just in case I mess something up. I seem to remembe...
I find periodically using "save as" makes my game save faster. When it starts to take awhile for my game to just "save" I use save as. And as others mentioned, just rename your new save, personally, I use the surname of my main household and then a number, i.e. Campbell 01, 02, 03 etc.