Nebula Capsule Max - Bluetooth sync issue

Hi all,
I’ve got audio sync issue when connecting a bluetooth speaker to my Nebula Capsule Max
it happens wifi+hdmi and USB connection
the audio is 1sec late than the image !!
I’ve got the same issue with my 2 different bluetooth speakers
one is a libratone zipp mini 2 (bluetooth 4.1)
the other is libratone zipp (bluetooh 4.0)

is there a solution??
if I watch a movie through VLC I can adjust the audio sync, but if I watch a live stream there is no control




I have the same issue with my Bose Bluetooth speaker and also with teufel earbuds. Only way to avoid desync is to use a aux cabel… but this is not a solution.