Pro-tip if you don't have a supercomputer or are even on a gaming laptop: the first thing you should do after starting the game up is go to Settings > Graphics > Vsync > On (Halved Framerate - optional).
When I tried to run this before enabling Vsync, it was performing very well through the intro on medium settings, and should have had no problem as nothing was moving in the story scenes, but just as I was starting to get into the meat of the game my whole laptop froze (opposite to literally) as the unlimited FPS was turning the graphics card into a space heater. I could no longer even kill the process, I could only hard-reset and then wait for it to cool for a while before it would allow me to boot again.
I had briefly forgotten that this was an issue with Unity games, but I've never seen it get that bad before. O_O