We recommend following troubleshooting methods in ZenUI app called ASUS Support under Apps>ASUS Support>Assistance>System>Device Overheat. If the issue cannot be resolved then possibly there is a hardware issue and may need to be sent in for warranty repair.
If you have any questions, concerns or would like warranty assistance, please feel free to contact me direct at cl-frank@asus.com. Please include a link to this review as a reference with your response.