Thank you for the logs.
I don’t know what’s happening to your network but if your clients are any indication then you have a bad networking problem.
The playback clients are constantly disconnecting.
Disconnects can be because the client hit STOP, or an App failure, or (likely in this case) a network failure.
A network failure would slow down anything PMS is trying to do.
ratingKey=7715&key=%2Flibrary%2Fmetadata%2F7715&playbackTime=3707&playQueueItemID=19654&state=playing&hasMDE=1&context=preplay%3Ahub.movie.similar&time=587000&duration=5389000 (10 live) TLS GZIP 7ms 454 bytes (pipelined: 37)
Jul 31, 2020 15:14:09.898 [0x7fe9cbfff700] DEBUG - Auth: authenticated user 1 as Fanxiang
Jul 31, 2020 15:14:09.898 [0x7fe9caffd700] DEBUG - Request: [192.168.50.2:49912 (Subnet)] GET /library/parts/9729/1571588448/file.mp4 (10 live) TLS Signed-in Token (Fanxiang) (range: bytes=219743403-)
Jul 31, 2020 15:14:09.901 [0x7fe9caffd700] DEBUG - Content-Length of /media/Movies/German.Concentration.Camps.Factual.Survey.720p.BluRay.x264.AAC.MVGroup.org/German.Concentration.Camps.Factual.Survey.720p.BluRay.x264.AAC.MVGroup.org.mp4 is 1731694274 (of total: 1951437677).
Jul 31, 2020 15:14:09.908 [0x7fe9cb7fe700] DEBUG - Failed to stream media, client probably disconnected after 376832 bytes: 104 - Connection reset by peer
Jul 31, 2020 15:14:09.908 [0x7fe9cb7fe700] DEBUG - Completed after connection close: [192.168.50.2:49911] 206 GET /library/parts/9729/1571588448/file.mp4 (10 live) TLS 56ms 376832 bytes (range: bytes=222872545-)
Jul 31, 2020 15:14:09.945 [0x7fe9cb7fe700] DEBUG - Auth: authenticated user 1 as Fanxiang
Jul 31, 2020 15:14:09.945 [0x7fe982ffd700] DEBUG - Request: [192.168.50.2:49913 (Subnet)] GET /library/parts/9729/1571588448/file.mp4 (10 live) TLS Signed-in Token (Fanxiang) (range: bytes=222873084-)
Jul 31, 2020 15:14:09.948 [0x7fe982ffd700] DEBUG - Content-Length of /media/Movies/German.Concentration.Camps.Factual.Survey.720p.BluRay.x264.AAC.MVGroup.org/German.Concentration.Camps.Factual.Survey.720p.BluRay.x264.AAC.MVGroup.org.mp4 is 1728564593 (of total: 1951437677).
Jul 31, 2020 15:14:09.951 [0x7fe9cbfff700] DEBUG - Failed to stream media, client probably disconnected after 573440 bytes: 104 - Connection reset by peer
Jul 31, 2020 15:14:09.951 [0x7fe9cbfff700] DEBUG - Completed after connection close: [192.168.50.2:49912] 206 GET /library/parts/9729/1571588448/file.mp4 (10 live) TLS 53ms 573440 bytes (range: bytes=219743403-)
Jul 31, 2020 15:14:09.990 [0x7fe9cb7fe700] DEBUG - Auth: authenticated user 1 as Fanxiang
Jul 31, 2020 15:14:09.990 [0x7fe9427fc700] DEBUG - Request: [192.168.50.2:49914 (Subnet)] GET /library/parts/9729/1571588448/file.mp4 (10 live) TLS Signed-in Token (Fanxiang) (range: bytes=219749875-)
Jul 31, 2020 15:14:09.995 [0x7fe9427fc700] DEBUG - Content-Length of /media/Movies/German.Concentration.Camps.Factual.Survey.720p.BluRay.x264.AAC.MVGroup.org/German.Concentration.Camps.Factual.Survey.720p.BluRay.x264.AAC.MVGroup.org.mp4 is 1731687802 (of total: 1951437677).
Jul 31, 2020 15:14:09.998 [0x7fe9cbfff700] DEBUG - Failed to stream media, client probably disconnected after 983040 bytes: 104 - Connection reset by peer
Jul 31, 2020 15:14:09.998 [0x7fe9cbfff700] DEBUG - Completed after connection close: [192.168.50.2:49913] 206 GET /library/parts/9729/1571588448/file.mp4 (10 live) TLS 53ms 983040 bytes (range: bytes=222873084-)
Jul 31, 2020 15:14:10.042 [0x7fe9cb7fe700] DEBUG - Auth: authenticated user 1 as Fanxiang
Jul 31, 2020 15:14:10.042 [0x7fe9d0dbc700] DEBUG - Request: [192.168.50.2:49915 (Subnet)] GET /library/parts/9729/1571588448/file.mp4 (10 live) TLS Signed-in Token (Fanxiang) (range: bytes=222873639-)
Jul 31, 2020 15:14:10.049 [0x7fe9d0dbc700] DEBUG - Content-Length of /media/Movies/German.Concentration.Camps.Factual.Survey.720p.BluRay.x264.AAC.MVGroup.org/German.Concentration.Camps.Factual.Survey.720p.BluRay.x264.AAC.MVGroup.org.mp4 is 1728564038 (of total: 1951437677).
Jul 31, 2020 15:14:10.052 [0x7fe9cbfff700] DEBUG - Failed to stream media, client probably disconnected after 376832 bytes: 104 - Connection reset by peer
Jul 31, 2020 15:14:10.052 [0x7fe9cbfff700] DEBUG - Completed after connection close: [192.168.50.2:49914] 206 GET /library/parts/9729/1571588448/file.mp4 (10 live) TLS 61ms 376832 bytes (range: bytes=219749875-)
Jul 31, 2020 15:14:10.054 [0x7fe9cb7fe700] DEBUG - Auth: authenticated user 1 as Fanxiang
Jul 31, 2020 15:14:10.054 [0x7fe941ffb700] DEBUG - Request: [192.168.50.2:49422 (Subnet)] GET /:/timeline?ratingKey=7715&key=%2Flibrary%2Fmetadata%2F7715&playbackTime=3707&playQueueItemID=19654&state=buffering&hasMDE=1&context=preplay%3Ahub.movie.similar&time=587000&duration=5389000 (9 live) TLS GZIP Signed-in Token (Fanxiang)
Jul 31, 2020 15:14:10.056 [0x7fe941ffb700] DEBUG - Client [dushqnv67o4k8a0i0v3b8a2u] reporting timeline state buffering, progress of 587000/5389000ms for guid=, playbackTime=3707ms ratingKey=7715 url=, key=/library/metadata/7715, containerKey=, metadataId=7715, source=
Jul 31, 2020 15:14:10.057 [0x7fe941ffb700] DEBUG - Play progress on 7715 '德国集中营实情调查' - got played 587000 ms by account 1!
Jul 31, 2020 15:14:10.057 [0x7fe941ffb700] DEBUG - [Now] User is Fanxiang (ID: 1)