Could not tune channel. Please check your tuner or antenna

Would need logs to start an investigation of the issues you still have on PMS 1.22.0.4163

Please run with debug logging enabled - see https://support.plex.tv/articles/201643703-reporting-issues-with-plex-media-server/

With debug logging already enabled, please restart the server to make sure we get fresh logs set created.

When the problem arises - note down the time and capture the logs zip
and attach with details when the issue arose and when was last successful tune

For logs download - see https://support.plex.tv/articles/200250417-plex-media-server-log-files/

Thanks