I got it to work!!!! Not through TV but through the PS4.
Wow Sony got their reps up on this, I don't really know if HD Audio makes any difference yet since I'm not running the best audio but just the fact that Sony got this working (apparently it was broken on launch)
PS4 = true Direct Bitstream uncompressed HD Audio
Useful for multimedia, I guess the XB1 is not really ready to be the ONE yet
In case anyone needs this info in the future!
1. HDMI ARC cannot do HD Audio (DTS-HD or Dolby TrueHD) and can only do 5.1 meaning the best implementation of HDMI ARC (HU8550 TV) still has limitations
2. Xbox ONE cannot transmit uncompressed lossless HD Audio (yet at least, hope Microsoft fixes this one!)
3. PS4 initially could not transmit uncompressed lossless HD Audio based on what I'm reading (forum posts in 2013 and 2014) but it's working now for me perfectly (set Bitstream to Direct when playing BD)
4. If you want HD Audio, run the source (PS4 or other HD Audio capable player) directly to the A/V receiver using HDMI only (no optical) and have the A/V receiver decode the audio signal and just send the picture over HDMI to the TV
Best setup for lossless HD audio at the current moment^
Don't think I'm sticking with it though, I like using my Samsung remote to switch between sources but good to know I conquered this problem and clarified some things for myself