Option to configure the video settings for all streams
My suggestion is to add a option or a collection of options in the user settings to specificate the best video stream options for all channels.
eg.: Your Network > Prefered settings > Chose the quality (1080p or 900p or 720p etc), enable Low Latency, enable Audio Only - and more options.
This option is applied to every live stream that you will watch, overlapping the default settings.
For comparison, the Twitch remember the settings in the first stream and keeps them to all future streams. My suggestion is some like that.