Thanks for the server logs. They show at 01:00:24 a request for a transcoder segment relating to the stream from http://192.168.1.70:34400/stream/2764a68efd74fb986b98174b7beeab4b taking over 13 seconds to complete and after that the transcoder exiting
Discussing with the development team if we need to get more detailed diagnostics
(in future please include logs from both the client and the server - for HTPC info on the logs can be found here Plex HTPC Logs | Plex Support)
I ended up ditching xteve and moving across to the successor \ fork on this called threadfin. It has many more updates and fixes and is under active development.
I would like to see more examples (sever and app logs) - before I suggest enabling some server transcoder settings to save the channel stream data and retain the transcoder segments as diagnostics
May be the issue is to do with xsteve streams as I did not get any failures when using Plex HTPC for DVR OTA Live TV.