There are a couple of crashes in that dxdiag in ck3.exe with a Windows error code c0000374, the associated data looks like some sort of Windows issue to me.
If you run the Windows update app does it find anything to update? If so do that and reboot.
If that doesn't help, Please report the temperatures of your CPU and video (GPU)
1/ before starting the game up and
2/ after a few minutes' play.
If your PC's vendor has given you no way of reading temperatures, install
And install and run the free utility Speccy. Send its output to a text file and attach that here please.