Not sure why people are saying this was a weak episode, I thought it was better than the first few episodes, though still a step down from last weeks.
Sure, we spend a lot of time with people I don't honestly care about. Bran, Sam, and especially Theon. But we also have some awesome scenes with Jon, and its great to finally see his story go somewhere. It was an awesome cinematic experience. That, coupled with the Tywin/Olenna, Jaime and Littlefinger/Varys scenes definitely made this episode interesting despite the slow start.