Performance & battery · Performance modes
What does "Auto · Good" or "Auto · Light" mean in Storage Studio?
Short answer: It means the setting is Automatic and Storage Studio has currently picked the level shown after the dot — Good, Rich, Light or Survival. It changes on its own as your Mac's conditions change.
It means the performance setting is Automatic and, right now, Storage Studio has chosen the level after the dot. Auto · Good is the normal balanced level; Auto · Rich means your Mac has plenty of headroom; Auto · Light means it has eased off; Auto · Survival means it has paused background work because the Mac is under heavy load.
The level can change on its own as conditions change — plugging in, unplugging, a heavy app starting or the Mac warming up. Hover over the label to see why it chose the current level.
You don't need to do anything when it changes. If you'd rather it stayed put, pick a fixed level from the same menu — see how to change the mode.