macOS Hard Restart

Twice now while playing the game via the macOS client, I've had the experience in which the game will play just fine for about an hour, and then suddenly my entire computer will freeze up and restart. Has anyone else experienced this? Is this possible related to the DX11 error people are getting?

Check your temperatures (processor, graphics card and just general case temperature) as maybe you're overheating which would explain why it works initially.