Jaxx776 I see a lot of BlueScreens in your dxdiag. If you want to troubleshoot those, let me know.
For the Sims 4 issue, try disabling post processing, and if that doesn't help, switching to DirectX 9 mode. Both settings are in the lower-right area of the graphics options. In both cases, you'd need to restart your computer to see the effects. These are just simple tests; I'm not saying you necessarily need to play this way going forward.
If neither helps, right-click your desktop, select the Nvidia Control Panel, choose Manage 3D Settings > Program settings, find TS4_x64 on the list, and enable anti-aliasing, overriding the application setting. You can play with the other options here, for example 2x is enough to fix some jagged lines on my system but may not be enough for you, and your GPU can handle maxed settings here. These are the settings I generally suggest:
Antialiasing - FXAA: On
Antialiasing - Gamma correction: On
Antialiasing - Mode: Override any application setting
Antialiasing - Setting: [anything 2x or more is fine]
TS4_x64 is the DirectX 11 .exe, so if you want to test DX9 mode, apply the same settings to TS4_DX9_x64 as well.
If that doesn't help, this is not exactly what you asked for but might give you the effect you want:
https://www.tumblr.com/peacemaker-ic/145505386277/just-a-quick-mini-tutorial-on-how-to-remove-the