HI, I have been having the same issue with the CD versioin when I get to the Pit during the section of the Brave New World mission. I tried closing and reopening the game and even restarting the console but hasn't seemed to work. I have also went back to an eariler point and gotten up to the pit but the game froze when I had to reload a save file.
I recently tried deleting the game from the PS4 but it hasn't seemed to work.