Re: Game randomly freezes, doesn't crash; PC becomes unresponsive
@tinyastrogeist Your dxdiag is full of video driver timeouts, so the place to start is with installing a new driver. This is the newest one from Nvidia:
https://www.nvidia.com/Download/driverResults.aspx/190348/en-us/
Run the installer as an admin: right-click on the download and select "Run as administrator." Choose the custom (not express) option and check the box to perform a clean install; restart your computer when it's installed.
If you get another freeze, please do a clean uninstall and reinstall of the graphics driver, as described here:
Another step you can try that might help is running your monitor at a lower refresh rate, for example 120 Hz rather than 144. While it and your GPU should have no issues at 144 Hz, I've seen a couple other players that needed to lower the refresh rates on their monitors to keep Sims 4 stable. Right-click on your desktop and select Display settings > Advanced to access the setting; restart after changing it and before trying to play.