I've got far too much content in my game and it's been getting a bit slow because the hard drive is too full so I'm moving some clutter over to external storage even though the clutter isn't all game-related.
@Cinebar -I was getting like you though not as bad yet and I'd take a look at the overall load on my computer's internal hard drive to see if it's gotten too full because that can slow the game and your computer down like what's been happeninto mine though I started working on fixing that with usb storage.