@x-Sakaeru-x The link probably does work, but it's asking me to sign in, which means access is restricted. Please either set the permissions to "anyone with the link" or, if you prefer, you can PM me the link instead.
What exactly did you do with virtual memory? Your dxdiag shows plenty of storage set aside for the page file, in truth a lot more than your computer could probably ever use, but if you merely increased this size, that wouldn't affect how Sims 3 runs. The game doesn't respond well to having its data paged, and that wouldn't do anything to overcome the 32-bit limit anyway.
Are you running an existing save or a new one, and did you ever play it with more than the base game active? Since you mentioned not using any expansions, I want to make sure that that's not the issue: removing an expansion from a save that's already been exposed to it can cause anything from terrible performance to an error when trying to load the save in the first place.
https://drive.google.com/file/d/1FP4ORXwNwheGe_8uyAIL2ym8WzT6KpjD/view?usp=sharing
I think this should work.
And yes for virtual memory I just increased the amount my PC can use so it shouldn't cause any issue but wanted to mention it anyway.
I have been running a new save each time I've done tests and haven't activated any expansions since the last time I reinstalled. When the problem started I hadn't changed anything to do with cc, mods or expansions so I don't think it's anything to do with that. I was running it with all expansions and a lot of CC and mods but it was working fine for months.
