OpenElec + Plex on Asus Chromebox [Issues]

I have two Asus Chromebox machines that I am testing in two different hardware environments.  Enviroment 1: Asus Chromebox ->Marantz 7001 -> Panasonic PT-AE2000 projector.  Environment 2: Asus Chromebox ->Pioneer Elite SC-61 ->Sharp Aquos

 

Both machines have tried 'generic' and 'intel' builds of OE + Plex. I have seen no real difference with either build.

 

Issues

  • DTS-HD MA & Dolby TrueHD do not usually play.  No matter what combination of options I select in the audio setup the audio will generally not play. I start a movie and the movie plays with no audio most of the time.  This requires a soft reboot to get ANY sound out of Plex again, including unrelated 2 channel like music.  The most consistency I have achieving lossless sound is to unselect DD receiver, DTS receiver, AAC receiver, DTS-HD receiver and TrueHD receiver. So the only option selected is LPCM receiver.  Set speaker output to 7.1 and have a movie that contains only 1 soundtrack (the DTS-MA or TrueHD track).  This will play about 90% of the time on DTS-MA and about 50% of the time on TrueHD.  If any other options are selected, specifically TrueHD and I play a TrueHD track there is no sound 100% of the time.  I have tried all different options on both receivers too.  Since I have two separate receivers this is improbable that it is a hardware issue on my side.
  • Dark scenes are too dark.  In doing a back and forth comparison of dark scenes (e.g. Edge of Tomorrow) between Plex and my aTV with the same exact straight Bluray file the dark scenes (e.g. at 1:40) and about 25% lighter and more watchable on the aTV.  I have tried changing the brightness tag guisettings.xml from 50 - 65 and creating an advanced setting.xml with the and setting it to many variables, does not seem to be doing anything.

The audio issue is the bigger issue right now.  

 

Thanks and I am willing to test and assist as best I can.

Not sure if anything from my post will help or if you got this figured out?

https://forums.plex.tv/topic/139845-oe-issues-with-dts-hd-and-truehd-after-changing-plex-settings/