User blog comment:Andronikos Leventis/EA changes System Requirements for TS3/@comment-74.47.2.170-20111024204452/@comment-26744861-20111024211454

There's a chance it won't but it's usually pretty slim; it usually happens if your computer only just meets the minimum requirements for the base game. For most computers, it may just be a slight fall in fidelity in terms of performance.