My game ran just fine for ages, but recently there's been a strange problem. It's effecting multiple games in different neighborhoods, and I don't know how to fix it.
It takes my Sims a long time to actually do anything. The game doesn't completely hang, but it takes them forever to actually respond to orders. My sim is standing outside her modest, one-story house. I tell her to go inside and pet her cat. By the time she stops standing around, pausing mid-step, reaching the cat, posing (because she's artistic), and says she can't find a path to the cat, more than four in-game hours have gone by. The game is achingly slow to play, even on ultra-speed.
I've already tried clearing the cache. I don't know where to go from here.