Re: Constant freezing/lagging in-game

Are you positive that the game isn't running on the card ? There's a tray icon you can opt in that will show you what software runs with what card.

Islo Paradiso has many issues. If that's the only world that is freezing, it might not be an graphic card issue.

 

Here's some more tips: http://answers.ea.com/t5/The-Sims-3/FAQ-Lags-amp-Freezes/td-p/646