SOLVED: Directplay/Directstream constant buffering

[TheDreadPirate]

Yeeeeep. Lots and lots of buffering.

Code:

2023-10-15 20:05:50.924 [debug] unknown @ 0 - cplayer: Enter buffering (buffer went from 100% -> 0%) [0.000000s].
2023-10-15 20:05:50.924 [info] unknown @ 0 - Entering state: buffering
2023-10-15 20:05:50.952 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 0% -> 23%) [0.234000s].
2023-10-15 20:05:50.953 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 23% -> 9%) [0.096000s].
2023-10-15 20:05:51.266 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 9% -> 11%) [0.112000s].
2023-10-15 20:05:51.269 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 11% -> 0%) [0.000000s].
2023-10-15 20:05:52.069 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 0% -> 17%) [0.176000s].
2023-10-15 20:05:52.571 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 17% -> 20%) [0.209000s].
2023-10-15 20:05:53.073 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 20% -> 43%) [0.432000s].
2023-10-15 20:05:53.876 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 43% -> 68%) [0.688000s].
2023-10-15 20:05:54.829 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 68% -> 94%) [0.944000s].
2023-10-15 20:05:55.837 [debug] unknown @ 0 - cplayer: End buffering (waited 4.909811 secs) [1.001000s].
2023-10-15 20:05:55.837 [info] unknown @ 0 - Entering state: playing
2023-10-15 20:05:55.844 [info] unknown @ 0 - JS: Requesting url without automatic networking: http://192.168.0.137:8096/Sessions/Playing/Progress
2023-10-15 20:05:56.786 [info] unknown @ 0 - JS: Sending web socket message: KeepAlive
2023-10-15 20:05:56.786 [info] unknown @ 0 - JS: Received KeepAlive from server.
2023-10-15 20:05:57.201 [debug] unknown @ 0 - cplayer: Enter buffering (buffer went from 100% -> 28%) [0.288000s].
2023-10-15 20:05:57.201 [info] unknown @ 0 - Entering state: buffering
2023-10-15 20:05:57.577 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 28% -> 16%) [0.166000s].
2023-10-15 20:05:57.837 [debug] unknown @ 0 - cplayer: Set property: pause=yes -> 1
2023-10-15 20:05:57.837 [info] unknown @ 0 - Entering state: paused
2023-10-15 20:05:57.842 [debug] unknown @ 0 - Enabling OS screensaver
2023-10-15 20:05:57.843 [info] unknown @ 0 - JS: Requesting url without automatic networking: http://192.168.0.137:8096/Sessions/Playing/Progress
2023-10-15 20:05:58.329 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 16% -> 20%) [0.209000s].
2023-10-15 20:05:58.435 [debug] unknown @ 0 - QWindow visibility set to QWindow::Minimized
2023-10-15 20:05:58.832 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 20% -> 42%) [0.422000s].
2023-10-15 20:05:59.632 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 42% -> 67%) [0.678000s].
2023-10-15 20:06:00.834 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 67% -> 93%) [0.934000s].
2023-10-15 20:06:01.587 [debug] unknown @ 0 - cplayer: Still buffering (buffer went from 93% -> 95%) [0.959000s].
2023-10-15 20:06:02.088 [debug] unknown @ 0 - cplayer: End buffering (waited 4.886531 secs) [1.190000s].

For testing. What happens when you play the same video in a browser? Try Edge since that browser SHOULD play HEVC directly. Trying to avoid transcoding HEVC to reduce the number of factors.

Is there any packet loss in your network? Do you have any QoS enabled?