Back with some more testing:
I've tried half duplex, setting rx/tx on, setting autonegotiation off, but to no avail.
However, 2 videos played perfectly. So it occured to me that there is a difference in file codecs/resolution etc.
Mediainfo of the 2 files that did playback all the way:
1:
Complete name : movies/Piranha (2010)/Piranha (2010).wmv
Format : Windows Media
File size : 6.52 GiB
Duration : 1h 28mn
Overall bit rate mode : Variable
Overall bit rate : 10.6 Mbps
Maximum Overall bit rate : 14.9 Mbps
Encoded date : UTC 2011-01-14 17:34:07.125 / UTC 2076-02-07 14:32:32
MediaFoundationVersion : 2.112
Video
ID : 2
Format : VC-1
Format profile : AP@L3
Codec ID : WVC1
Codec ID/Hint : Microsoft
Description of the codec : Windows Media Video 9 Advanced Profile
Duration : 1h 28mn
Bit rate mode : Variable
Bit rate : 9 895 Kbps
Width : 1 920 pixels
Height : 800 pixels
Display aspect ratio : 2.40:1
Frame rate : 23.976 fps
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.269
Stream size : 6.11 GiB (94%)
Language : English (US)
Audio
ID : 1
Format : WMA
Format profile : Pro
Codec ID : 162
Codec ID/Info : Windows Media Audio
Description of the codec : Windows Media Audio 10 Professional - 640 kbps, 48 kHz, 5.1 channel 24 bit 2-pass CBR
Duration : 1h 28mn
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Sampling rate : 48.0 KHz
Bit depth : 24 bits
Stream size : 404 MiB (6%)
Language : English (US)
2:
Complete name : movies/Fight Club (1999)/Fight.Club.1999.REMASTERED.REPACK.720p.BluRay.x264-WLM.mkv
Format : Matroska
Format version : Version 2
File size : 6.56 GiB
Duration : 2h 19mn
Overall bit rate : 6 746 Kbps
Encoded date : UTC 2010-11-20 18:09:31
Writing application : mkvmerge v4.4.0 ('Die Wiederkehr') gebaut am Oct 31 2010 21:52:48
Writing library : libebml v1.0.0 + libmatroska v1.0.0
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2h 19mn
Bit rate : 5 236 Kbps
Width : 1 280 pixels
Height : 536 pixels
Display aspect ratio : 2.40:1
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.318
Stream size : 4.96 GiB (76%)
Writing library : x264 core 108 r1788 c764e29
Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=5236 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Language : English
Default : Yes
Forced : No
Audio
ID : 2
Format : DTS
Format/Info : Digital Theater Systems
Codec ID : A_DTS
Duration : 2h 19mn
Bit rate mode : Constant
Bit rate : 1 510 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 24 bits
Compression mode : Lossy
Stream size : 1.47 GiB (22%)
Language : English
Default : Yes
Forced : No
And two files that do stop during playback:
3
Complete name : movies/The Matrix (1999)/The Matrix (1999).mkv
Format : Matroska
Format version : Version 1
File size : 13.1 GiB
Duration : 2h 16mn
Overall bit rate : 13.8 Mbps
Encoded date : UTC 2009-04-10 15:58:55
Writing application : mkvmerge v2.6.0 ('Kelly watch the Stars') built on Mar 24 2009 15:23:17
Writing library : libebml v0.7.7 + libmatroska v0.8.1
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2h 16mn
Bit rate : 13.2 Mbps
Width : 1 920 pixels
Height : 800 pixels
Display aspect ratio : 2.40:1
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.357
Stream size : 12.3 GiB (93%)
Writing library : x264 core 67 r1137M 1fda882
Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=7 / psy_rd=1.0:0.0 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=-2 / threads=3 / nr=0 / decimate=1 / mbaff=0 / bframes=3 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=1 / wpredb=1 / keyint=250 / keyint_min=25 / scenecut=40 / rc=2pass / bitrate=13155 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00
Language : English
Default : Yes
Forced : No
Audio
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : A_AC3
Duration : 2h 16mn
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 624 MiB (5%)
Language : English
Default : Yes
Forced : No
4
Complete name : movies/The Last King of Scotland (2006)/The Last King of Scotland (2006).mkv
Format : Matroska
Format version : Version 2
File size : 9.31 GiB
Duration : 2h 3mn
Overall bit rate mode : Variable
Overall bit rate : 10.8 Mbps
Movie name : the last king of scotland
Encoded date : UTC 2010-11-01 20:09:25
Writing application : mkvmerge v3.4.0 ('Rapunzel') built on May 15 2010 09:38:20
Writing library : libebml v0.8.0 + libmatroska v0.9.0
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2h 3mn
Bit rate mode : Variable
Bit rate : 8 707 Kbps
Maximum bit rate : 25.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.175
Stream size : 7.28 GiB (78%)
Title : Film
Writing library : x264 core 96 r1613 81e75e9
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / weightp=2 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=8707 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=25000 / vbv_bufsize=25000 / ip_ratio=1.40 / aq=1:1.00 / nal_hrd=vbr
Default : Yes
Forced : No
Audio #1
ID : 2
Format : DTS
Format/Info : Digital Theater Systems
Codec ID : A_DTS
Duration : 2h 3mn
Bit rate mode : Constant
Bit rate : 1 510 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 24 bits
Compression mode : Lossy
Stream size : 1.30 GiB (14%)
Title : DTS
Default : Yes
Forced : No
Audio #2
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : A_AC3
Duration : 2h 3mnBit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 563 MiB (6%)
Title : AC3
Default : No
Forced : No
Text
ID : 4
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Title : NL Subs
Language : Dutch
Default : Yes
Forced : No
What is the factor that decides that 1,2 play perfectly, and 3,4 don't play properly?
As far as I can tell, it's not the format (mkv or wmv), resolution (1 and 4 have the same res).
If I need to provide more info, please tell and I'll include. Thanks again!