I recently binged this show over the course of a couple days. I rate it a 6, slightly above average. It is based on a book I believe--I haven't read it for the record. I want to begin by saying the plot just didn't really make sense to me both in terms of how it progresses and how it ends. I am not against leaving stories open-ended or ambiguous. Sometimes leaving it to the viewers to interpret or imagine in their heads is a powerful tool, but in this case it does not work well. There is not enough information provided to the viewer to make sense of the ending in a satisfying way in my opinion.
As I have seen some other reviews mention, Christopher Waltz does a great job and I found his character humorous and well-acted, but he alone cannot make a confusing story make sense. There is one interpretation that the show does seem to hint at, but I don't know how to describe it other than unsatisfying and very surface-level.
Some other slight issues I had were that like the premise that eventually gets explained of why the consultant is there didn't make much sense to me unless the show takes place in a universe full of overly naive people. People committing huge criminal acts and the authorities apparently don't really care. The show is about a video game company, but the game they make look like it's a game from 2010. I could easily look past issues like these if in service of receiving a good story, but the payoff just wasn't there for me. My review may seem harsh but overall, it is worth a watch because it is visually entertaining and it starts off strong.