Tried the suggestions here (albeit a few years old)
https://forum.avast.com/index.php?topic=142490.msg1033996#msg1033996
Sound is working fine, except when Chrome is running in a Sandbox. The one thing I do notice is that the mixer does not think Chrome is actually running.
In both cases, Chrome is running on YouTube and a video is playing.
Mixer settings when Chrome NOT running in a Sandbox
https://screenpresso.com/=VB1dc
https://screenpresso.com/=VB1dc
Mixer settings when Chrome IS running in a Sandbox
https://screenpresso.com/=xnlKc
https://screenpresso.com/=xnlKc
Since I have had to do a clean install recently to fix another issue, I do not have Safe Browser available, hence wanting to run in Sandbox.
PS - not sure if img tag works, hence both as preview did not show the image … but then I am running Chrome in Sandbox 