The YouTube menu acts on every YouTube box at once:
- Auto live keeps clicking the player's LIVE button so streams stay at the live edge.
- Max Volume sets every YouTube player to 100% and unmutes it. Gallery mute, solo and rotation still decide what you hear.
- Low Quality switches every player to its lowest fixed quality, which saves bandwidth and CPU on a big wall.
Live Gallery also lifts a YouTube player to full volume when it loads, because the embedded player often starts quiet. Once you change a player's volume yourself, it leaves that player alone.