Sims 4 Memory Leaks

AthenasOwl322​  Then please provide a dxdiag.  Click Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop.  From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.

I'm not saying your husband missed something, but there might be a known Sims 4 issue he wouldn't recognize on sight.  As for the memory leaks, in the technical sense, yes the game has them, but they happen all the time without causing the game or an entire computer to crash.

The term "memory leak" describes when an application doesn't remove data from memory after it's done using that data.  Then the app ends up demanding more RAM than it needs, and sometimes a lot more over a longer session.

For example, when you load CAS, the game will load thumbnails into RAM so you could see them as you're outfitting your sim, and then it might not wipe all that data from memory once you go into live mode.  The result is that Sims 4 can at times have more memory allocated to it than it's actively using, but this is not harmful per se on a computer with enough RAM installed to accommodate the extra usage.  On a low-end computer, or one running a lot of other tasks at once, it could be an issue.

All that is to say that a memory leak, by itself, is merely an inconvenience most of the time.  So I think the crashing you're getting is likely unrelated.