The first season was very, very good, the second season I could tolerate, mostly because it felt like it was a transitional season, and perhaps the 3rd season would be better. But then the 3rd season went off a cliff. I watched the 5 episodes and then I just gave up, something I almost never do. It was just too awful to watch, as it descended into cliche and forgot everything that made the series interesting.

We've all seen this happen with some shows, but Westworld was an extreme case.