I have this issue with my pulse 3d audio headset on my PS5. At random points in the game, the game sound cuts out, I know it's not an issue with the headset as I can hear other sounds such as the menu sounds from the console if I press the PlayStation button to bring up the console menu.

A temporary workaround that seems to work for me is to plug a wired headset into the controller and unplug it. Then the audio in the pulse headset resumes.

Are you guys using pulse audio headsets, wired ones or TV audio?