See, I loved those moments. It worked kind of how Spring worked in The Last of Us, though not quite as effectively obviously. But it was the moment after a shocking moment where Druckman was like "have some pretty shit to look at." I feel it worked, especially with the dialogue between the couple and the way it actually felt like interactions between two grown ups who are accepting their lot in life.
Where you see a failure of pacing, I see the best part of the game. I'd have loved to be with Elena for the entire game, but then we wouldn't have a story because she would've seen through Sam's shit in an instant... though arguably Sully should have seen through it quicker since he distrusts Sam to begin with.