I know It’s not supporting DTS so transcode happens. That’s not the problem as I wrote in my message. When transcode happens after some time the video starts to stutter and it’s not a problem for the server transcoding since the transcoded audio can go forward but the direct stream video is what goes with 1 fps. With the version 4.29.7 this problem disappears so I really doubt it’s a server side issue. This problem was long existing and there are several topics about it. Before 4.29.7 it couldn’t play, with 4.29.7 it plays as it’s should with the preview app the problem even worse and meanwhile the server is exactly the same so I’d say it’s a client issue.