Thank you for answering classmate
I do not know what it can be but any video over network or usb with AC3 audio is cut off the sound and I am not the only one I have already read some more users that also happens to him.
This happens to me when playing videos with audio a52 (aka AC3) from a folder in network or from the own USB.
I have tried to change the configuration of black hole sound but it is not solved.
This happens to me in the vu + solo (se)
a greeting