For some reason the smart ones at EA have Anisotropic Filtering turned off by default, this will show you how to turn it on. And I'll tell you all what it does in a minute
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Just to be clear with you all, I'm reposting this here. This was originally made by a person from Gamespot, then was brought to my attention from Tictic on Flickr. So I'm not trying to steal anything, just thought I'd be helpful seeing as it doesn't appear anyone here knows about it, as I haven't heard any talk of it.
Now, what it does. It improves textures like ground textures when they are further away from the camera. In my game I would notice while driving on the road that as I'm driving the white lines would slowly become unblurred, making for terrible looking roads as it was very noticeable. Also the grass only a few feet away but still on camera would be completely blurred out, also everything seemed to have a look of unsharp, but when changing these settings things seemed to be a bit sharper. What caused this I have no clue. So overall what this mainly will do and where it's most noticeable, is when your seeing things like the ground and trees and even sims will all appear sharper from further away. I found this was helpful, mainly because even with my old graphic card at x8 had no lag even when changing the settings.
Now, here's the annoying part. I only have an Nvidia card, so if you guys could try this on your ATI cards I'd add the instructions here. As it is right now, I only have these for Nvidia. So I have no possible way of knowing for sure that it will be the same way with ATI. I'd appreciate it if someone could test it out for us
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Now without further ado, the instructions :].
-Right click on your desktop
-Go to nVidia Control Panel
-Go to Advanced Settings
-Go to Left Panel then to Manage 3D Settings
-You will see on the right panel the tabs: Global and Program settings
-Click the Tab Program Settings
-Select a Program to Customize --- Add TS3
(you'll find two - TS3 and S3 launcher Choose TS3.exe not the launcher). Program files -- Electronic Arts -- The Sims 3 -- Game -- Bin
-Anisotropic Filtering is on the first option and you will see initially that it is Application Controlled. This is the part you have to change.
-Change it to whatever you think your card can handle.
-Apply.
By the way you can find the .exe from add then go to the programs directory and such, you guys probably all know this and find the executable that is called TS3.
EDIT: Just thought I'd post here to let you people that already have overheating and crashing problems to not even bother with this. While it made a difference for me, this won't help your crashing game. It could only make it worse, and more frequent to crashes. I've never crashed myself, and I haven't crashed since. So for those people who haven't crashed or don't crash very often, or if it isn't related to a hardware problem, I don't see why you can't try it and see if you see a difference. There may not be a difference that is significant enough for you, and you can easily turn it off again by going back to your graphic card options and disabling it.