Microsoft - please add an audio delay adjustment in Audio Settings

You’re looking at processing delay, you need to adjust the audio delay on either your TV or the sound bar consult your manual

There are typically delay/audio sync settings for hdmi on receivers and soundbars and I suspect this is your problem. Try looking though your component manuals to see if you can adjust this.

Have you tried adjusting the audio in the audio settings to be the correct frequency

Click the settings icon on the audio channel

Go to advanced audio properties

CLick sync offset

and then adjust that. It will vary depending on how much of a delay you have, so you are best doing an irl stream "testing audio etc" get a viewer to help you or watch/listen on your phone. Make a distinctive sound, something with a visual cue, and adjust
the ms offset until its accurate ms = milliseconds for the audio to be adjusted.

Listening on your phone is also a good way to see if you are having issues or if it is the viewers. I have had it a lot where people come in saying my audio is breaking up, but I'd be listening on my phone on a different wifi network and have 0 issues. Sometimes
things like that are down to them using add block, or not clicking the lock icon on the browser and permenantly allowing twitch/mixer to use flash

Go to audio setting and adjust microphone