It's not really even slow, as you're getting information the entire time. It's just not all gunslinging action. Which is good. As much as it can be done well, action is a mocked genre for a reason. A "slow" show can have loads of depth if done correctly. Look at Breaking Bad's now iconic fly episode.
There is some good writing advice, at least some writing advice that I agree with, and it goes something like this: does the scene add/change anything to a character, a situation, a location, or the plot? If not, then you probably want to drop it. And I feel that too many times (like in TWD), with many shows or movies, it feels as if they add too many scenes for atmosphere, aesthetics, or filler, which to me, makes the shows feel empty no matter how long they are. It makes a one hour show drag on but gives the feeling that almost nothing happened.
I understand that real life can become tedious, but I think that the feeling of tedium can be presented in many different ways, without making the viewer experience tedium. While I can understand an artist wanting a spectator to experience tedium to put them into the "right place" to experience the art, tedium is not a feeling I want to experience when I'm looking to be entertained.
That's my beef with shows like TWD. They're slow AND nothing happens. Very basic info that should take minutes to impart takes an entire episode, at the cost of any character development at all.
I have a lot to say about that, but I'll hold my tongue (fingers), here.
Any way, tangents aside, I have enjoyed all the episodes of Westworld and think they are all well done. And I also want to watch the season again.