Count as a viewer even when tab is not in focus as long as the video is playing, as twitch says it already does but actually doesn't.
https://help.twitch.tv/s/article/understanding-viewer-count-vs-users-in-chat?language=en_US#:~:text=If%20I%20have%20a%20stream,tab%20is%20not%20in%20focus
"If I have a stream open playing live video in another tab, do I still count as a viewer?
Yes, if live video is playing, you will count as a viewer, even if that tab is not in focus." -Twitch
This is a blatant lie as I've tested this out with a streamer friend, when I'm no longer tabbed into the stream it'll no longer count me as a viewer, its not muted which also doesn't stop you being a viewer supposedly. Just fix it to where as long as the video is playing it'll count correctly.
Personally I only have the one monitor so I'll leave a stream up and play my own game and listen to a stream. But since it isn't counting me as a viewer even though its suppose it's not working as Twitch support says it does.