UserAgent: Mozilla/5.0 (X11; CrOS x86_64 10176.76.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.190 Safari/537.36
Platform: 10176.76.0 (Official Build) stable-channel eve

Example URL:

Steps to reproduce the problem:
1. One step above mute is too loud
2. 
3. 

What is the expected behavior?

What went wrong?
too loud at lowest volume setting

Did this work before? N/A 

Is it a problem with Flash or HTML5? N/A

Does this work in other browsers? N/A

Chrome version: 64.0.3282.190  Channel: n/a
OS Version: 10176.76.0
Flash Version: 29.0.0.113 /run/imageloader/PepperFlashPlayer/libpepflashplayer.so

Contents of chrome://gpu: