I get only audio playing, no video. Same behaviour Z9X and Real Vision 4K.
Reconverted as mp4, flv, i get same, only audio.

Format : Matroska
Format version : Version 4
File size : 4.46 GiB
Duration : 1 h 39 min
Overall bit rate : 6 407 kb/s
Frame rate : 24.000 FPS
Writing application : Lavf59.33.100
Writing library : Lavf59.33.100
ErrorDetectionType : Per level 1
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5@Main
HDR format : Dolby Vision, Version 1.0, Profile 8, dvhe.08.06, BL+RPU, no metadata compression
Codec ID : V_MPEGH/ISO/HEVC
Duration : 1 h 39 min
Width : 3 840 pixels
Height : 1 608 pixels
Display aspect ratio : 2.39:1
Frame rate mode : Constant
Frame rate : 24.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Writing library : x265 3.5+1-f0c1022b6:[Linux][GCC 7.5.0][64 bit] 10bit
Encoding settings : cpuid=1111039 / frame-threads=4 / numa-pools=16 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=1 / input-res=3840x1608 / interlace=0 / total-frames=0 / level-idc=0 / high-tier=1 / uhd-bd=0 / ref=4 / no-allow-non-conformance / no-repeat-headers / annexb / no-aud / no-eob / no-eos / no-hrd / info / hash=0 / no-temporal-layers / open-gop / min-keyint=24 / keyint=250 / gop-lookahead=0 / bframes=4 / b-adapt=2 / b-pyramid / bframe-bias=0 / rc-lookahead=25 / lookahead-slices=4 / scenecut=40 / no-hist-scenecut / radl=0 / no-splice / no-intra-refresh / ctu=64 / min-cu-size=8 / rect / no-amp / max-tu-size=32 / tu-inter-depth=1 / tu-intra-depth=1 / limit-tu=0 / rdoq-level=2 / dynamic-rd=0.00 / no-ssim-rd / signhide / no-tskip / nr-intra=0 / nr-inter=0 / no-constrained-intra / strong-intra-smoothing / max-merge=3 / limit-refs=3 / limit-modes / me=3 / subme=3 / merange=57 / temporal-mvp / no-frame-dup / no-hme / weightp / no-weightb / no-analyze-src-pics / deblock=0:0 / sao / no-sao-non-deblock / rd=4 / selective-sao=4 / no-early-skip / rskip / no-fast-intra / no-tskip-fast / no-cu-lossless / no-b-intra / no-splitrd-skip / rdpenalty=0 / psy-rd=2.00 / psy-rdoq=1.00 / no-rd-refine / no-lossless / cbqpoffs=0 / crqpoffs=0 / rc=abr / bitrate=6000 / qcomp=0.60 / qpstep=4 / stats-write=0 / stats-read=2 / cplxblur=20.0 / qblur=0.5 / ipratio=1.40 / pbratio=1.30 / aq-mode=2 / aq-strength=1.00 / cutree / zone-count=0 / no-strict-cbr / qg-size=32 / no-rc-grain / qpmax=69 / qpmin=0 / no-const-vbv / sar=1 / overscan=0 / videoformat=5 / range=0 / colorprim=1 / transfer=1 / colormatrix=1 / chromaloc=1 / chromaloc-top=2 / chromaloc-bottom=2 / display-window=0 / cll=0,0 / min-luma=0 / max-luma=1023 / log2-max-poc-lsb=8 / vui-timing-info / vui-hrd-info / slices=1 / no-opt-qp-pps / no-opt-ref-list-length-pps / no-multi-pass-opt-rps / scenecut-bias=0.05 / hist-threshold=0.03 / no-opt-cu-delta-qp / no-aq-motion / no-hdr10 / no-hdr10-opt / no-dhdr10-opt / no-idr-recovery-sei / analysis-reuse-level=0 / analysis-save-reuse-level=0 / analysis-load-reuse-level=0 / scale-factor=0 / refine-intra=0 / refine-inter=0 / refine-mv=1 / refine-ctu-distortion=0 / no-limit-sao / ctu-info=0 / no-lowpass-dct / refine-analysis-type=0 / copy-pic=1 / max-ausize-factor=1.0 / no-dynamic-refine / no-single-sei / no-hevc-aq / no-svt / no-field / qp-adaptation-range=1.00 / scenecut-aware-qp=0conformance-window-offsets / right=0 / bottom=0 / decoder-max-rate=0 / no-vbv-live-multi-pass
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : A_AAC-2
Duration : 1 h 39 min
Channel(s) : 6 channels
Channel layout : C L R Ls Rs LFE
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Writing library : Lavc59.48.100 libfdk_aac
Default : No
Forced : No
Text #1
ID : 3
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Duration : 1 h 37 min
Language : English
Default : Yes
Forced : Yes
Text #2
ID : 4
Format : PGS
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 1 h 39 min
Default : No
Forced : No
Text #3
ID : 5
Format : PGS
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 1 h 36 min
Default : No
Forced : No
Menu
00:00:00.000 : 00:00:00.000
00:10:51.541 : 00:10:51.541
00:17:36.333 : 00:17:36.333
00:23:11.458 : 00:23:11.458
00:28:50.625 : 00:28:50.625
00:34:12.750 : 00:34:12.750
00:40:38.958 : 00:40:38.958
00:46:15.333 : 00:46:15.333
00:53:11.666 : 00:53:11.666
00:55:50.416 : 00:55:50.416
01:03:33.500 : 01:03:33.500
01:08:15.750 : 01:08:15.750
01:13:41.916 : 01:13:41.916
01:18:45.791 : 01:18:45.791
01:29:49.291 : 01:29:49.291
01:35:22.083 : 01:35:22.083

Having this behaviour - Q5 keeps reverting to 720p - after every boot.
Changing 720p to 1080p in settings works only until next boot.
If i set display to Optimal, instantly goes to 720p.
Any advice?
In Kodi all is ok.

I have a H8 Octa and Jurassic.World.2015.1080p.BluRay.x264.DTS-HD.MA.7.1-RARBG is stuttering like hell.
Can someone confirm this is working fine on Q5/Q10?
Thanks.

Playing movies from media center via usb external usb hdd - external subtitles not working but audio dts is ok.
Playing from kodi - external subtitles works but only stereo audio, no dts.
Any advice?
Maybe RMA?