Blackmagic's camcorder CPU?

With the SID supported by Blackmagic, we put a person standing in front of the green screen on the Unreal Engine screen.
At that time, the CPU temperature was 60 to 70 degrees Celsius.

When connecting two SID camcorders, the CPU temperature is measured at 85℃.

Is there an SID connection method to optimize the CPU?
Should dual CPU be installed with dual main board? Do I need to install more coolers?