Hello @the-creative-pup !
I always get excited if someone finds a fix for this, since there are so many players on PC that encounter this.
Sadly, the settingslist that you provided is almost the same as the settings I've set for the past year (and I have encountered this bug last week...).
I had my dynamic range set on MEDIUM, so I will set that to NARROW just as you. Once I had the time to play Kashyyyk I will report back with my findings!
It works for me. I've now gone a week since I made this change and it still works. Just for laughs, I changed these settings and the audio stopped on the first match. Personally, I don't care because I don't feel it'll ever be fixed officially so if this helps *anyone*, then it's still better than the alternative.
I am 100% certain it's the audio system crashing and not just related to the Kashyyyk map because I've had the audio cut out on Hoth and Jakku too.
I can sadly confirm that this is not a permanent fix. I have selected the exact settings as you did and just experienced the sound bug.
Every time I get this bug I have to restart my PC. Very annoying!
Despite it not being a perma fix (I didn't test it yet though), it may lead to a narrower investigation field to the causes of this BUG. As it has never happened to me in any other mode except for Galactic Assault*, maybe its bigger nature allows for more sound samples to be started together or just be played together and that causes an issue. I'll play a bit with sound settings to see if I can find more info about it. Thanks for the effort @the-creative-pup
*I actually experienced sound cutting out in HvV a few times a long time ago, but it was always together with character models becoming totally or partially invisible, so I'd guess this is a complete different issue then what we usually experience in Galactic Assault
