I think I know the problem and will test to confirm.
When you use IPTV Network Automatic you need a .m3u file. Mine had entries like:
#EXTM3U
#EXTINF:-1 tvg-name="UNC-TV" tvh-chnum="4.1",UNC-TV
http://192.168.0.21:5004/auto/v4.1?duration=7200
#EXTINF:-1 tvg-name="ROOTLE" tvh-chnum="4.2",ROOTLE
http://192.168.0.21:5004/auto/v4.2?duration=7200
#EXTINF:-1 tvg-name="UNC-EX" tvh-chnum="4.3",UNC-EX
http://192.168.0.21:5004/auto/v4.3?duration=7200
#EXTINF:-1 tvg-name="NCCHL" tvh-chnum="4.4",NCCHL
http://192.168.0.21:5004/auto/v4.4?duration=7200
Note the duration=7200 which is 2 hours. I'm going to make the edits as in:
#EXTM3U
#EXTINF:-1 tvg-name="UNC-TV" tvh-chnum="4.1",UNC-TV
http://192.168.0.27:5004/auto/v4.1
#EXTINF:-1 tvg-name="ROOTLE" tvh-chnum="4.2",ROOTLE
http://192.168.0.27:5004/auto/v4.2
#EXTINF:-1 tvg-name="UNC-EX" tvh-chnum="4.3",UNC-EX
http://192.168.0.27:5004/auto/v4.3
#EXTINF:-1 tvg-name="NCCHL" tvh-chnum="4.4",NCCHL
http://192.168.0.27:5004/auto/v4.4
and see what happens.