After 10+ emails back and forth between myslef and BMD tech guys they are stumped.
I called the local tech support in Australia and they too were stumped.
We tried rolling back the decklink driver to 7.9.5 but that didn't do anything.
I tried multiple different HDMI cables. Still nothing.
I reinstalled the card 3 times and still nothing. They think it is an issue between the decklink and the tv as Media Express isn't showing any output either.
It is definitely something between the card and the tv as everything else is working perfect and on our other client monitors (not vt30) it is working.