@xpirt getting a FC when I turn bluetooth audio channel mode on. Here is a logcat - https://drive.google.com/file/d/0B5H_NO3oeuLZVWF6VTdkbVdPejg/view?usp=sharing
did you lower the dpi? if so try restoring it to >600 (or better stock 640).
i have same issue on 6.5 with stock dpi, audio channel settings FC - BUT gets connected and works as it should.