Low Audio Levels
There are audio tracks or segments peaking at dramatically low levels, causing a poor customer experience.
Correct the audio to ensure a consistent level across the content.
Currently Netflix does not enforce any particular loudness specs for licensed content. However, tackle this issue by looking at the content from the perspective of the viewer, ensuring the audio is at a level that would provide a pleasant viewing experience.
If you are dealing with Netflix Original content please ensure you follow the audio mixing requirements which specifically detail the required average loudness and peak levels.