Certain sounds completly stop!

I said me too because my problem was very similar but for me it happened while fighting the boar. All sound dropped out beside the music (which made the combat experience more difficult because you had no audio queues). Once I completed the fight it went to the interaction between me and the old man in the mask and it sped up all the dialogue screens for him so that I was unable to read anything he said. He did not talk at all during the scene.

I believe that the sped up cutscene is connected to the audio bug and hopefully it will make it easier for them to narrow down why it is happening and get it fixed. 

After the interaction it went back into the base game but there was still only music playing. I saved and restarted the game and this fixed the issue.