Make sure to run the game on the 32 bit version. https://help.ea.com/en-us/help/the-sims/the-sims-4/when-to-use-the-sims-4-64-bit-or-32-bit-version/
Deluxe or normal edition on the same system will give you access to your saves either way.
So I get it. My game runs on a 32-bit processor. My game only crashes to one particular 50x50 lot where I built a large house with lots of items in it, also with plenty of plants. My game lags everytime I enter to that lot. After saving the game I go to manage worlds and that is when the game crashes. In my case, do I need a 64-bit processor because I'm playing on a heavily populated lot? Or to prevent crashes, I just need to delete some items on the lot for it to run properly. 🙂)
Try updating your OS to the 64-bit version.
