Unable to direct play .mkv on Samsung TV

The only way to play the following file via my Samsung TV 2013 model is to enable transcoding, however other .mkv play just fine. Is this 10bit thing perhaps playing any part in the plex decision making?

Thanks
:-)

General
Unique ID                   : 244909349286022344848537228255054807310 (0xB83FD32F99075FCEAD9469D05218410E)
Complete name               : N:\MOVIES\L\Louder than bombs [2015]\Louder.Than.Bombs.2015.1080p.10bit.BluRay.5.1.x265.HEVC-Power.mkv
Format                      : Matroska
Format version              : Version 4 / Version 2
File size                   : 1.56 GiB
Duration                    : 1h 44mn
Overall bit rate            : 2 134 Kbps
Encoded date                : UTC 2016-05-26 17:45:37
Writing application         : mkvmerge v8.9.0 ('Father Daughter') 64bit
Writing library             : libebml v1.3.3 + libmatroska v1.4.4

Video
ID                          : 1
Format                      : HEVC
Format/Info                 : High Efficiency Video Coding
Format profile              : Main 10@L4@Main
Codec ID                    : V_MPEGH/ISO/HEVC
Duration                    : 1h 44mn
Bit rate                    : 1 889 Kbps
Width                       : 1 920 pixels
Height                      : 1 040 pixels
Display aspect ratio        : 1.85:1
Frame rate mode             : Constant
Frame rate                  : 25.000 fps
Color space                 : YUV
Chroma subsampling          : 4:2:0
Bit depth                   : 10 bits
Bits/(Pixel*Frame)          : 0.038
Stream size                 : 1.38 GiB (88%)
Writing library             : x265 1.9+54-291beccb6760:[Windows][GCC 5.3.0][64 bit] 10bit
Encoding settings           : wpp / ctu=64 / min-cu-size=8 / max-tu-size=32 / tu-intra-depth=1 / tu-inter-depth=1 / me=1 / subme=2 / merange=57 / no-rect / no-amp / max-merge=2 / temporal-mvp / early-skip / rdpenalty=0 / no-tskip / no-tskip-fast / strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / fast-intra / open-gop / no-temporal-layers / interlace=0 / keyint=250 / min-keyint=25 / scenecut=40 / rc-lookahead=15 / lookahead-slices=6 / bframes=4 / bframe-bias=0 / b-adapt=0 / ref=2 / limit-refs=3 / no-limit-modes / weightp / no-weightb / aq-mode=1 / qg-size=32 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=2 / psy-rd=2.00 / rdoq-level=0 / psy-rdoq=0.00 / no-rd-refine / signhide / deblock / sao / no-sao-non-deblock / b-pyramid / cutree / no-intra-refresh / rc=2 / pass / bitrate=1888 / qcomp=0.60 / qpmin=0 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ipratio=1.40 / pbratio=1.30
Default                     : Yes
Forced                      : No

Audio
ID                          : 2
Format                      : AAC
Format/Info                 : Advanced Audio Codec
Format profile              : LC
Codec ID                    : A_AAC
Duration                    : 1h 44mn
Bit rate                    : 243 Kbps
Channel(s)                  : 6 channels
Channel positions           : Front: L C R, Side: L R, LFE
Sampling rate               : 48.0 KHz
Frame rate                  : 46.875 fps (1024 spf)
Compression mode            : Lossy
Delay relative to video     : 9ms
Stream size                 : 182 MiB (11%)
Language                    : English
Default                     : Yes
Forced                      : No

Menu
00:00:00.000                : en:00:00:00.000
00:10:04.320                : en:00:10:04.320
00:18:01.000                : en:00:18:01.000
00:30:24.920                : en:00:30:24.920
00:38:20.840                : en:00:38:20.840
00:49:53.800                : en:00:49:53.800
00:58:29.600                : en:00:58:29.600
01:06:06.280                : en:01:06:06.280
01:12:39.640                : en:01:12:39.640
01:21:22.880                : en:01:21:22.880
01:32:28.040                : en:01:32:28.040
01:38:18.520                : en:01:38:18.520