TV app no audio playback

My MBP works well and I have very few issues ever. However, when I try to watch something via the TV app, audio rarely works.

I have my MBP in closed clamshell, connected to 3 screens, via OWC Thunderbolt 3 docks (both Pro and standard versions. My audio plays back via a PreSonus Studio 1810c. My primary Mac usage is video production, including surround audio. I use this setup professionally every day and have been working on my ownMacs producing video professionally, since 2003 - I am pretty proficient.

HOWEVER, trying to watch content on the Apple TV App is a nightmare! The audio does not default to the settings for every single other app on my system! How is this?

I am at a loss for how to fix this - it's bonkers!!!!

Can anyone help?

System:

MacBook Pro (16-inch, 2019) 2.3 GHz 8-Core Intel Core i9

64 GB 2667 MHz DDR4

AMD Radeon Pro 5500M 8 GB