Sims appear to be grainy/pixelated?

AThirstyMonster  Thanks for the dxdiag, which crashed while running and lists a number of Windows errors.  So please run a couple of basic checks of your Windows system files:

• Hit Windows key-X
• Choose either “PowerShell (Administrator)” or “Windows Terminal (Administrator),” whichever option is offered
• Inside the window that appears, copy and paste “DISM.exe /Online /Cleanup-image /Restorehealth” without quotes, and enter
• The system will start validating soon. If it throws an error, please list it here
• After it reaches 100%, hit Windows key-X again
• Again, choose “PowerShell (Administrator)” or “Windows Terminal (Administrator)”
• Inside the window, copy and paste “sfc /scannow” without quotes, and enter
• Post the message you receive here

Restart your computer, hit Windows key-i, select Update & Security, and click the box to check for updates.  If any install, restart again afterwards.

For the issue itself, please test in both DirectX 9 and 11 modes and let me know whether one looks right, or close enough.  The check box for DX9 mode is in the graphics settings, to the right of uncompressed sim textures.  Please restart after switching and before testing out the setting.  And please test with no mods or custom content present, at least for now.

If you notice a problem in both modes, please post a couple more screenshots (still with no mods or cc) and zoom in and/or highlight the issues.  I'm not really seeing them in your screenshots, although I trust you when you say they're there.  I'm not sure whether the effect is too subtle, only showing in-game and not in screenshots, or getting lost in translation with the less-than-perfect way this site displays images.  If you can't get the screenshots to look the way you want, you could instead upload them to a third-party image hosting site like imgur and provide a link.