It would seem I am not the only one worrying about this. I am on PS4 and the game has frozen a few times this past week as well. Every time it has happened, I have been in between areas, denoted by the black screen and the loading symbol to the bottom right.

This has happened when going into my FC house, right after training my chocobo and during teleporting. The way my PS4 responds when it happens makes me think it is a genuine crash as I could hear my PS4 revving down as if I had closed the game application.