Syncbox 2 Dolby vision (Non-LLDV) passtrough?

Recently got a Ugoos AM6B+ and installed coreelec on it for playing the fancier bluray formats but i cant get display-led dolby vision through my HDMI syncbox 2. My only option unless i plug the client straight to tv is player-led(LLDV) which does not work as good.

Is there a setting on either side im missing or do i just have to live with this compromise.

Tv is a TCL C835 if that matters