DVR | General Feedback & Issues

There is nothing for me to start to look into to investigate and see what is happening.

Best to get some server logs with debug logging of one test that is ok and one test with the increased channels that is not ok. Test with one plex client eg Plex Web
Please clearly state what was being tuned and what time and the outcome

See
https://support.plex.tv/articles/201643703-reporting-issues-with-plex-media-server/
https://support.plex.tv/articles/200250417-plex-media-server-log-files/