This Ableton tutorial clip covers two closely related browser topics: what indexing is and how to keep your Places section lean. When Live first launches or when a large folder is added to the browser, it builds a real-time directory of all referenced content in the background, a process called indexing. A spinning icon next to the word "Places" signals that it's happening, and you can monitor exactly how much CPU it's consuming via Activity Monitor on Mac or Task Manager on Windows.
The practical takeaway for Places is to add only targeted shortcuts to the folders you actually need in Live. Adding broad locations like your Desktop, Downloads folder, or an entire system drive forces Live to sift through far more data than necessary. Cloud-synced sample folders carry a similar risk, introducing extra CPU load that can compound performance issues during a session.