[PC/Origin] The Sims 4 Freezes when I Tab Out.

@DapperPaperBagSF  Yes, Error 85 has to do with network drives, but if you're not using one, that would be a strange error to see.  I'd be interested to know whether DISM worked if you ran it again, and if it threw another error, exactly what it said.

The issue with Sims 4 is likely related to the driver for your graphics card though.  There's a slightly newer driver available from Nvidia, so try installing that:

https://www.nvidia.com/Download/driverResults.aspx/164741/en-us

If it doesn't help, the next step would be to do a clean uninstall and reinstall of the driver.  Download Display Driver Uninstaller from here:

https://www.wagnardsoft.com/forums/viewtopic.php?f=5&t=3282

Next, take your computer completely offline—disable wifi and/or pull the ethernet cord—and double-click the DDU.exe.  Take note of where the file will land, and click Extract.  If it's easier, you can copy the path and then paste it into the address bar in a File Explorer window.  Open the folder and then launch Display Driver Uninstaller.exe, and you'll get a message that you're not in Safe Mode.  Click OK, then go to Options and enable Safe Mode dialog.  Here's a screenshot of what your options should look like; make sure the box in red is checked:

Close options, and the DDU, and then open the DDU.exe again.  For launch options, choose "Safe Mode (Recommended)," and then click Reboot to Safe Mode (you'll need your password, so find it before rebooting).  Once you login, you'll see this:

In the blue box, choose GPU, then Nvidia if it's not already showing.  Then click Clean and Restart (red box).

Once your computer has rebooted, now back in normal mode, run the driver install .exe in custom mode.  Select "perform a clean installation" and install ONLY the GPU driver and the PHYSX software.

Reboot again, go back online, and see whether the game works normally.  If not, let me know.