With Fiio M11 and Poweramp 830 in high res mode the hardware buttons for skip up/down an play/pause will interrupt the audio playback. At the same time the display shows normal operation. Restart of Poweramp will bring the audio back till the next usage of the buttons. Soft buttons are working without issues. In native audio mode all hardware buttons work fine. Hope the issue can be solved because Fiio M11 and Poweramp would be a good team together.