Hi,
I seen lot of reports in net about your mainboard related to a specifiy AMD CPU and the BIOS version in point of thermo issues. But I’am not realy sure about such reports 
For me more interessting sounds the AMD GPU… in point of thermo issues and drivers.
Within forum reported some users issues with specific driver version.
Example:
Might be you can check this.
And which size you set now for your pagefile ?
Otherwise… hmmmm… 