Why does my sims 3 game keep lagging?

Answer 1

There is a possibility that the disc is scratched, or,

have you by any chance downloaded extra, for example, hairs, clothes, designs, ect.: for your sim?

If so, uninstall them all and restart the system, they destroy the game.

Answer 2

If the lag only lasts for a split second, it could just be how the game is interacting with you system. If the lag lasts for longer than a second, it is likely that your cache files are too large and your computer is struggling store and retrieve so much data on demand. Try the following (Window 7):

1. Go to Documents\Electronic Arts\The Sims 3

2. RemovecompositorCache.package and put it on your desktop

3. RemovesimCompositorCache.package and put it on your desktop

4. Reload the game and see if everything is working properly

5. If it is, you can delete these two files from your desktop

Note: Deleting these files may cause some Sims to temporarily be invisible. This should be corrected as soon as they change clothes to sleep, go to work, take a shower, or something that requires a change of clothes.