Okay, proper Master Race people, laugh and laugh and laugh.
So I was trying to play this on:
i7 4770k @ 3.5ghz
8 GB RAM
GTX 770 2gb
Fine, it's not super high end like everything people seem to have on here, and I haven't overclocked anything, but I can play things like the recent AssCreeds or Witcher 3 at 60fps in 1080p with lots of settings on high/ultra.
HAHAHAHAHAHAHA no. Quantum Break laughs in the face of this setup.
The first bad sign was when all the graphics settings defaulted to "low". DO NOT TRY AND PLAY QUANTUM BREAK ON LOW SETTINGS. I have no understanding at all of most of the Digital Foundry stuff that "proper" PC gamers go on about so I can't tell you about anti-aliasing or ambient occlusion or whatever the hell those things are - I can tell you that at sub-HD resolution and with everything turned to low it looks like Vagrant Story with better character models. It would, however, run at something like 60fps (I would love to record footage or something like that, but... the Geforce Experience's footage recording thingy crashed the game when I tried to use it).
Basically I seem to be able to cope somewhere between "low" and "medium" pre-settings. I have no idea which is the magic combination of things to use to make the game look as attractive as possible in a crappy situation, but basically it's going to be worse than the Xbox version. I shan't bother until I've sighed, pulled out my credit card, and worked out which bit to upgrade first...