Try to set the graphics details at minimum, you'll gain performance but lose quality, also,the Intel GMA X3100 is not a good video chip for playing games like TS3 and its expansions, these games require more computation than a built-in chip could give, also, I think very few intel built-in cards can render a game in a good speed. Even with my Ati HD3200 I can't play this game as well.
