I don't see the answer that I previously posted but I'll add it again. This overheating thing is so frustrating. It began a while back, so I removed the protective cover I had on it and that seemed to fix it until a few weeks back when I loaded an APP called Word Cookies. Tablet would overheat every time I played that. I have others games and word games that I play without any problem.
So, take note of what is happening when it overheats....what APP are you using? Maybe it is an APP or a process that's causing it. My tablet stopped overheating when I removed that APP.