Description of the issue: YouTube fullscreen videos are lagging (dropping frames), whether in 720p, 1080p or higher with the framerate of 60. When I press Alt+Tab and switch to show another window, the video playbacks perfectly fine and with the same quality.
Exact URL of the website in question: https://www.youtube.com/
Did the issue present with [default Shields settings]? yes
Does the site function as expected when Shields are turned off? no
Is there a specific Shields configuration that causes the site to break? If so, tell us that configuration. no
Does the site work as expected when using Chrome? yes
**Brave version (check About Brave
): V1.18.77
PS: Better understanding in this video: https://www.youtube.com/watch?v=nI3Rf0Mv-Ik