@Dungeony-Splatty Thanks for the info. The d3d9.dll file is a component of DirectX 9, which can't be missing or entirely unusable, as the game wouldn't even start. But it's worth reinstalling DX9 anyway. You don't need to uninstall anything; just run the installer over the top and restart, like this:
https://answers.ea.com/t5/Technical-Issues-PC/Sims-3-launcher-won-t-open/m-p/10711778#M247861
If that does't help, have you taken steps to manually limit your in-game framerates? If not, try doing so now. Right-click the Nvidia Control Panel, select Manage 3D Settings > Program settings, find ts3.exe on the list, and set a Max Frame Rate of 180, to match your primary monitor.
If that doesn't help either, or you've already done it, please try playing with your computer offline. You can sign into the EA App and put it in offline mode, then disable wifi and/or disconnect the ethernet cable before pressing Play. The two most recent crashes in your dxdiag point to a component of Windows that allows third-party apps to access the internet, and rather than tinkering with various Sims 3-specific settings, playing offline is a quick and helpful test.