Hi everyone,
i have a problem with DTS-Movies on my Rasplex 1.8.0. RasPlex is installed on a Sandisk Ultra 16GB Micro-SD card. Even took another card for testing with same results.
My Plex Server Version is 1.7.2.3878 on Synology DS916+ (tested as well with Plex Server Version 1.7.2.3878 (Windows) installed on SSD’s on a DELL T20 with 32GB RAM)
RasPlex 1.8.0 runs on a Raspberry Pi 2 (tested on 2 identical Pi’s, same problem) connected via HDMI to a Denon AVR-X1200W (with a 5.1 Speaker-Setup) connected to a Sony KDL-55HX825 TV.
RasPlex:~ # tvservice -a
PCM supported: Max channels: 8, Max samplerate: 192kHz, Max samplesize 24 bits.
AC3 supported: Max channels: 6, Max samplerate: 48kHz, Max rate 640 kb/s.
DTS supported: Max channels: 6, Max samplerate: 96kHz, Max rate 1536 kb/s.
EAC3 supported: Max channels: 8, Max samplerate: 48kHz, Max rate 8 kb/s.
DTS_HD supported: Max channels: 8, Max samplerate: 192kHz, Max rate 8 kb/s.
MLP supported: Max channels: 8, Max samplerate: 192kHz, Max rate 8 kb/s.
My settings are:
Audio output device: HDMI
Number of channels: 5.1
Support 8 channel DTS-HD audio decoding: Unchecked
Enable passthrough: Checked
Dolby Digital (AC3) capable receiver: Checked
Dolby Digital Plus (E-AC3) capable receiver: Checked
DTS capable receiver: Checked
But no matter what settings i use, it doesnt help.
Every DTS-Movie runs for some seconds, then stops for a while… runs for some seconds… stops… runs… stops…
I don’t know the exact output from plex, but it seems 2 buffers (B and VF) are running low and it refills them… then starts playing again until buffer is empty again.
I made a movie of the output cause i cant describe it any better.
I know RasPlex was playing these movies w/o any Problem in an earlier release. Just dont ask me, what release it was.
What really makes me suffer is that if i use Kodi (OpenELEC or OSMC) with the AddOns “Plex” or “PlexKodiConnect” (on same Hardware and SD-Card), every DTS Movie plays fine w/o any stuttering or other problems. There are other - UI related - reasons why i would love to use RasPlex.
My Amazon Fire-TV Stick (on another TV) plays every Movie w/o problems, same with PS/3 with Plex Addon - no matter if DirectPlay or transcoded.
I would be glad about any advice 
Nachtwind