Best answer by Jeff S
Welcome to the community. In your diagnostic report I see a bit of wireless interference which could be making it hard for your Play:5 to stream the TV's audio to your other speakers. Please try changing the wireless channel your Sonos system is using and see if that helps.
Audio from line-in sources, such as your TV, can often use up a lot of bandwidth. In many cases it is best to set the compression level on the line-in audio to compressed. You can do this in the Sonos app's settings menu under advanced settings. This will introduce a bit of a delay though, so it may not be a great option for TV audio.