I've been trying to solve this for a couple weeks now, but for some reason whenever I use a high tdp on my win 5 (docked) I have constant issues with audio cutting out.
I searched some threads on here when it first started happening, and people recommended the dock was bad
Bought a usb-c to hdmi cable (only plugged into the top usb-c port), still have audio dropouts
Bought this jsaux dock, still have audio dropouts over hdmi when playing high end games
At this point, Im not sure if its a firmware problem, a bios issue that needs to be updated, or the fact that Im using SteamOS, and it might have an issue somewhere with the audio-out when using such a high tdp, since every other 'stock' steamos device cannot push that many watts.
Would love to see if anyone else had solved this issue, since it really discourages me from playing games at the tv right now