*For Elgato Game Capture users*
I was having this issue where I only had audio in the cutscenes. When I enabled Elgato Sound Capture I was able to get in-game sound to work.
PC Gaming Tab
"Where do you want to hear your PC gameplay" - Automatic (Sound Blaster Z in my case)
"Which output is your Elgato Game Capture device connected to?" - Automatic (none in my case)
Hope this helps someone till an official fix is released.