Little backgound on me. I love playing games on my 4k high refresh 65” big screen with my Steam controller. I was very sad about how the sound came across my steam connection from the Shadow system. It is very metailic and does not hit that bass like the native Shadow client does so well.
That being the case, I have now muted the Steam stream sound and have it play on host in remote play from the Shadow system so I get the best sound and the graphics Shadows delivers.
Here is the setting I am talking about in Steam:
Steam (top left in non-big picture) > Settings > Remote Play > Advanced Host Options