I had been getting a problem where hour-long or longer videos had been stalling at around ten or eleven minutes into it. From this point onwards, the video stutters, unless it is forced to replay from just after this point.
This occurs not just for the stream; it also happens for stream rips and source videos.
This might be a recording or editing issue.
For example, in the recent Now Playing for FTL: Advanced Edition, the flaw occurred at around 00:10:50 to 00:10:55.