Started off great and went downhill for me as well.
Elliots slow, spaced out way of talking got annoying after a while. He talked perfectly fine in the pilot. I'm guessing it was to show his mental health issues were getting worse as it went on, but it made it frustrating to watch for me.
Tyrell was the only thing that kept me watching as he is such an interesting character. I will continue to watch season 2 just to see where they go with it.