Passthrough of DTS and AC3 on Intel Z8300 Cherry Trail (Atom) chip boxes

G’Day. Just bought a Minix Z83-4 media box running Windows 10 Home. Installed Kodi 17 RC2. Passthrough for audio of 5.1 does not work for either DTS or AC3 – even 2 channel PCM does not work. Sony receiver shows reception correctly of audio bitstream, but audio is either severely delayed or does not work at all. Audio works as expected if passthrough in Kodi is switched off. Passthrough does work with exact same setup (or earlier versions of Kodi and XBMC) on laptops running higher end Intel chips or my Android 4.4 media boxes.Thanks for any responses.