October 2019 - last edited October 2019
@puzzlezaddictWell after several hours of play the game at last crash, i was monitoring carefully the USE of RAm, it go Boom when it reach 3.5GB, also i found the game make the error 12 when you try to save when you have the RAM USE over 3GB when it goes under 3GB the error 12 dont show up, you can save the game without problem, Seems like is the memory use.
I Change long ago the sims3.ini to use 8GB, but seems like it doesn't matter if we change it there, every time the game runs more than 3.2- 3.3 or 3.4GB it goes BOOM.
MemoryUsageLimit = 80000000
@LeoSalinas73 That memory usage limit setting won't have any effect. Sims 3 is a 32-bit app, so it can only ever use 4 GB RAM before it crashes. The real limit is more like 3.7 GB, and if it hits that for even a second, it will crash or throw an error. Saving takes more memory than regular gameplay, so your attempt to save can fail if you're anywhere near the RAM limit. An Error 12 means the game is out of resources, usually memory but sometimes VRAM.
The only solution is to try to keep Sims 3's memory use as low as possible. There are ways to manage RAM use, but if you see it approaching 3.5 GB, all you can do is save, quit (without saving, as a separate step), and reload. Other things that will help:
You don't need to do all of this; just pick the options that you can live with and see how it goes. Managing RAM use can be annoying, but once you get used to it, it's not too difficult.
Other than the suggestions above, certain NRaas mods can help. ErrorTrap and Overwatch are great, but since you have all packs, you may want to add Traffic, which limits the spawning of vehicles in real time (Overwatch just cleans them up every night). Register also helps with managing role sims. And if your sims travel, it's a good idea to add Traveler as well; it makes the travel transition much more reliable, and it cleans up other vacation-related errors as well.