While the acting isn't on par with AMC's Walter from Breaking Bad, I don't think it's that bad! They're not hamming it up, there's just a lacking in subtlety that is probably the fault of the direction more than anything. 'The complexity of Man' is, obv., going to be a recurring question posed by the show. My issue currently is that we're not being treated to mini-arcs that last a few episodes that really seem to go anywhere - however, they are clearly the signs of plotting, especially if you remember what the word actually means. We are seeing the Alpha state of these characters, and I'm holding back from judging their acting perhaps because I know tha the transition towards omega will be a far greater test.
I'll also reserve my judgement because, again, we've only had 6 episodes. It can take time for actors to become accustomed to each other. The show's started out above average, and the story it is based on is proof enough that the show can only get better.