I bought the dlc, so I decided to replay the game. On ep. 1, the screen would freeze every time it autosaved. I went to the forums, and tried a quick fix (switching between fullscreen and windowed). After that, it fixed the freezing, but the mouse lagged like crazy, making it hard to do anything at all. I kept at the fullscreen thing, and it worked good enough for me to finish the episode. When I started ep 2, it asked about rewinding and all that junk, and I just said ok, so I could go ahead. After that I got the black screen that would just stay there until I quit. It really broke my immersion and is a big problem that I would think telltale would be more concerned about fixing.
I am running TWD through steam on my 2011 macbook pro