Additionally, do note that during the benchmarks the fans were audibly working hard, so I don't think that is it.

Also, the laptop remains perfectly cool to the touch.

Hi!

Check this article and complete all the troubleshooting steps. Make sure to run the hardware diagnostics and capture any errors you get.

If issue persists, send me a private message with your Service Tag, contact information and link to this thread so I can help you further.