Maintenance for the week of July 13:
• PC/Mac: No maintenance – July 13
The issues on the North American and European PlayStation® megaservers have been resolved at this time. If you continue to experience difficulties at login, please restart your client. Thank you for your patience!
Also happening for me on PS4. This has apparently been an issue on PC since early August. For what it's worth, it only seems to be happening with questlines associated with the Thieves Guild. Vendors and other NPCs in Hew's Bane still talk on time and their lips move.