User blog comment:Lost Labyrinth/Tips on improving the visual quality of TS3 with minimal performance impact/@comment-1997588-20130329155545

Maybe you could add Save Cleaner tool, which will shrink down your save memory size by cleaning up unnecessary SNAPs and IMAGs inside the save game.

More to read:
 * Unused SNAPs in Sims Asylum
 * The overabundance of memory images in Nraas (I know memory in TS3 is a bad, bad idea)