Youtube Performance issue

Description of the issue: When I go on Youtube and try to watch a video not in fullscreen, everything works well but as soon as I go in fullscreen I get some sort of performance/frame rate issue I have rather less fps and there are these lines which looks like a light screen tearing

Exact URL of the website in question:

Did the issue present with default Shields settings? (yes/no) Yes

Does the site function as expected when Shields are turned off? The Frame rate issue is less, but the screen tearing thing is still there.

Is there a specific Shields configuration that causes the site to break? If so, tell us that configuration. (yes/no): no

Does the site work as expected when using Chrome? Yes, also works in Firefox.

Brave version (check About Brave): 1.78.102

Is HW acceleration enabled?