How to check cpu/gpu usage?

[Kakashi]

I am a noob when it comes to all this, and how much of the hardware should actually being used while gaming... but shouldn't it be closer to 100%? instead of being close to zero?

I don't mean to insult the devs, I'm sure they'll sort it out eventually. But 40% is extremely low isn't it? (If it is that would be good, it would mean that when all problems are fixed my comp would run this game better )