We are receiving reports on Zendesk that latest Nvidia driver 536.40 can cause some instability with the Sim.
If you are using the 536.40 driver with your Nvidia GPU and are experiencing crashing, we recommend going back to version 536.23. If this version is unstable on your system as well, we recommend going all the way back to version 531.29 and wait for Nvidia to release a new driver before updating.
https://www.nvidia.com/Download/index.aspx?lang=en-us
With the latest 536.40 driver, we are also seeing crash reports with the following message:
Error: DXGI_ERROR_DEVICE_HUNG (0x887a0006)
If you get this error, it is most likely caused by your GPU drivers.
You can discuss the latest drivers in this thread: