ConstLayoutShift - CumulativeLayoutShift measures to which extent users encounter unexpected layout shifts.
FirstInputDelay measures the time from when a user first interacts with the page to the time when the browser is able to respond to that interaction.
InteractionToNextPaint measures the time from when a user interacts with the page until a visual representation of a page reaction was rendered.
LargestContentfulPaint - Render time of the largest image or text block visible within the viewport, recorded from when the page first begins to load.
InteractionToNextPaint measures the time from when a user interacts with the page until a visual representation of a page reaction was rendered.