Of course there is the usual things, what kind of video card, update video card, defrag, empty cookies and internet folders. If it is a new game, should still not be lagging that much. Most of us have had the game since it came out and right now I have a very large game, collections, paintings, large garden, etc, that is just now starting to lag some, but not enough to hinder gameplay. Sometimes turning off internet and turning off background applications helps also. Make sure you have any updates or patches, but other than that, not sure what to suggest. Usually if it is a new game, might be video card. What kind do you have?