Have you tried the stuff here: http://answers.ea.com/t5/The-Sims-3/FAQ-Lags-amp-Freezes/td-p/646
If that doesn't help please answer these questions so that everyone can help you better:
I have tried the resetsim * cheat, does not work. I have been playing fine for about 4 months now out of the blue it is freezing. I have a brand new windows 8 HP Envy, I know it is not my computer, it is something with the game. My computer exceeds all the requirements and once again it is only recently It is freezing and unplayable. It did not even do this on my old computer. I am very frustrated and about to quit the Sims all together. I played fine for months and now ti suddenly has stopped. I have been playing on Appaloosa plains the whole time. I am not gonna make a new game and start over only to have it all happen again. Can't they make a patch to fix this because there is tons of people with the same issue. It starts to freeze every few seconds almost immediately after I start to play. I will delete the cars from my Sims inventory but doubt that will help. Very disappointed I spent money on these games only to have so many problems. The sims 4 comes out In a year and I doubt I will buy it if it has issues like the Sims 3.
And I do not have any custom content. I usually only play the game for 2 hours at a time but now it is unplayable pretty much.
Could you try a new game for testing reasons to see if it's the game as such or just that particular savegame.
Long played games do tend to get overloaded with stuff like cars and other objects that don't get cleaned out properly by the game.
Did the resetsim * cheat not do anything or not help with the issue ? Were your sims reset and placed to a save location ?
The resetsim cheats did put the sims back in a safe location but it still kept freezing. I could try a new game but I have not even played that much on the town I have the original sims, there kids and then 2 grankids in my house and a few pets. I went on smaller households but they froze too. I guess I could try a new town but I don't want the same thing to happen in time ha I just want to play the game without glitches...
