When the element fetches the heavy call code (the realtime overlay, drivers, channels).
none
hover
idle
eager
When the element fetches the heavy call code (the realtime overlay, drivers, channels).
none— only when the call starts.hover(default) — when the visitor's pointer or keyboard focus reaches the start button (or on touch).idle— once the browser is idle after the page has settled.eager— immediately, as soon as the element is attached.