Computer Goes to Sleep in Dzemael Darkhold

Hi, I'm experiencing a strange problem with my computer going to sleep at the same point in a dungeon. This has happened 3 times so far. It's at the first Magitek Teleporter in Dzemael Darkhold. It could be that my laptop is overheating, but it never happens at any other point in the game, not even when it's chugging at 5fps in a 200 person FATE in the Cerulean Processing Plant, fans blowing at full speed.

I find it very strange that it would overheat while going through a 4-person dungeon, especially at a point with no enemies. 3 times at the same spot. Perhaps it's a bug?

Thanks in advance for your time.