With The Sims 3 releasing back in 2009 and finishing its run in 2014 newer models of GPUs have come out since then but since the game has not been updated by EA due to no more patch support the game will not recognise newer graphics card models and believe it or not make you game run slower. LIKE ANY TYPE OF GAME GUIDE THAT MAKES YOU EDIT THE GAME FILES ALWAYS, ALWAYS BACK-UP YOUR FILES BEFORE STARTING! Edit at your own risk if using game version 1.70. This guide is intended to be used with game version 1.67 and 1.69, this guide was not made to be used with the game version 1.70 (64 bit Mac Update). If you have any questions feel free to look at the F.A.Q Section or ask in the comments below and I will be sure to assist in any way that I can! If a step has an ' (Optional)' tag in the title means its up to you if you would like to add the tweaks to your game, If it has a ' (Essential)' Tag in the title it is recommended that you use the step to get the best results with the game and its performance. Every step that I have listed are the steps I personally use to make my game run much more smoother on my PC system. Welcome to my guide for The Sims 3 and how to improve its performance on newer PC systems.