I have a civic 2010 and facing these audio problems https://youtu.be/oVQqbngt8BI
Speakers and head unit is stock. The issue is whenever I turn on BBE, sound gets distorted. It was working fine before.
What I've done
Removed speakers one by one to check if there is a problem with a certain speaker however issue persists even on a single speaker connected.
Removed the head unit and checked the wirings everything seems to be fine.