I've been having this annoying problem since I started playing the game, when it came out. Whenever I change areas, like if I go into/out of a house (and especially if I'm in towns/cities), the game lags for a couple of secs, then goes back to normal. This happens almost every time I change areas, and the longer I play, the longer it lags each time, until it reaches a point where it doesn't go back to normal. The only way I know of to fix it is to quit the game and launch it again. What can I do?