Like this video, I am constantly hearing this noise, and nothing is making it go away. It is making the game unplayable.
We're already looking into that, sorry for the inconvenience! I don't have a huge update so far but we were able to reproduce it internally, meaning we should be able to produce a fix for this but I don't have a time frame for that right now.
As a workaround some players have suggested that entering an ECHO can remove the sound from happening.
The cause seems to be abandoning a project.