GLACIAL BOLT audio bug!!!

Just trying new things out I came across this wierd bug with Glacial Bolt.
Seems to happen 80% of the time I shoot it.. like some particles get trapped and it sounds horrible, like my soundcard is broken..

Showed support gems in video to maybe help pinpoint it:

https://www.youtube.com/watch?v=J2KG4dYmPbQ
Scattershot-Volt-DoubleBarrel