I don't think the acting is over the top, I totally disagree with you in that part
While the woman may be kinda annoying, I think it's meant to be that way, her purpose is to make them suffer (or that's what it looks like), and I think her attitude and movements make her scarier for them
Finally, the NC scene... Uhm, did you see the flashbacks? I really think there's more to it than just "they decided to have sex"
I don't understand the low rating, because, yes, the first episode left us with lots of questions, butt I think that's the intention! And the production and acting is really good
While the woman may be kinda annoying, I think it's meant to be that way, her purpose is to make them suffer (or that's what it looks like), and I think her attitude and movements make her scarier for them
Finally, the NC scene... Uhm, did you see the flashbacks? I really think there's more to it than just "they decided to have sex"