I currently have the sims 3 and about 6 expansion packs. I am trying to buy another one. Game play has been kind of laggy, but I don't know if that's just because of the nightlife and pets expansion pack, because I know a lot of people have been having problems with nightlife. I'm trying to figure out if it's my computer. I have a Toshiba satellite C55 series laptop that only cost me $249 in office depot. Is this kind of computer usually good with the sims 3?