Allo Digione intermittent during playback

Hello,

I setup is Pi 3 + Digione > Teac UD501.
I have an issue that the Digione sound intermittent during playback. Also, the response of Pi 3 will become slow, sometimes it will drop the connection between web browser and the Pi 3.
Pi 3 will work fine if I changed the playback from Digione to USB.
Is it the Digione got fault? Did anyone have the same issue like me?

Thanks for any reply