I have had this minor bug for months, basically since the 2nd patch. I haven't really seen much, if anything about it reported.
During conversations, characters will be talking normally, and then their mouths stop moving while the are still talking. The rest of the body still moves; eyes, eyebrows, arms, etc.
I have tested it using both Vulcan and DirectX. I'm have an Acer Predator PH315-52 with an Intel i7-9750H 2.6 GHz, Nvidia GeForce GTX 1660Ti, 64bit Windows 10 Home, 16GB RAM, Samsung Evo 970 SSD. Drivers are up to date.
Any help is appreciated.