Modern websites commonly embed cross-origin content like videos, social widgets, and ads. Embedding these resources allows sites to offer compelling content experiences, but it also creates a lot of overhead that can jank the page in ways the embedding site can’t control. The latest version of Chrome

no longer runs the rendering pipeline

or

requestAnimationFrame()

callbacks for cross-origin frames that are offscreen. This eliminates unnecessary work and

reduces power consumption by up to 30%

on several popular mobile sites without affecting the user experience.