I believe this is the same issue happened in my Tone Board.
I think the Tone Board is not a problem but the driver causes the issue. I tried my Tone Board with windows 10, this issue occurs. But when I use my Tone Board with MacBook, there is no problem at all.
See my thread. Not working in windows 10
I hope Khadas will fix it. Maybe, update the driver for windows 10 or update the firmware for the Tone Board.