Video bitrate reduced when the video is not visible in OBS (not active in a scene)
&optimizereduces the video bitrate to 600-kbps when the video is not visible in OBS (not active in a scene). This is mainly there to help with reducing load for OBS and for guests. It can take a few seconds for the bitrate to ramp back up after it becomes active again.
This does not work with iPhone-sourced video streams.