[popcornmix]

so I tried out the one 3d mvc mkv file I have last night and the 3d works great although for some reason the default 3d mode comes up as over/under and it has sound but no picture. As soon as I change the mode to side by side it works.

I couldn't get hd audio to work, at least I don't think so as my receiver didn't say that it was.

also the file was stuttering so I guess the will have to be compressed a bit to get the bit-rate down. This was playing through my wired gigbit network.

Is this with Pi1 or Pi2?
On Pi1, I was able to play a raw BluRay rip to mkv of Gravity as MVC with framepacking, but you need overclock and a good (e.g. tuned NFS) wired network. I wouldn't expect DTS-HD to work.
On Pi2, things are much easier. Overclock is not required, network can be less optimal (e.g. SMB) and DTS-HD should work.

If you have issues with Pi2 then a sample file would be useful to look at.
DTS-HD on Pi1 may be too much for now (libdcadec is purely C with no assembly optimisations so is expected to be less efficient that ffmpeg's internal DTS decoder).