Is your The Sims 3 game lagging on PC? Here's a fix!

@Idontrcall - Yes, they can get quite large. It depends on the world. I've never seen them go much over 500 MB each, so for a world that caches that way that could be as much as or just over 1 GB per world as each one has two such files. Have to admit that I wouldn't want dozens of those hanging around for worlds I rarely or never play either, but then it becomes more of a hard drive space consideration than one of performance.