Definitely unplayable for me.
I was able to talk to Theron, meet with Aric and finished the first fight. When Aric mentions needing a higher vantage point., the chapter objective went back to "Press Play to Launch the Chapter" with me still in the instance. I can't reset it because it basically hasn't started, and whenever I press the Play button I end up in my base in Odessen. Tried completely logging out a couple of times. Tried pressing play from different areas (public areas, my stronghold, etc...). Tried choosing a bunch of different companions. At this point I am giving up. I hope they fix it soon. Some early access (grumbles).