Youtube performance

Description of the issue:
Fast forward skipping some seconds/minutes of videos takes more time to load than on Safari, where the video loads instantly.

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?
No
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?
No idea.
Brave version (check About Brave):
[
Version 1.31.88 Chromium: 95.0.4638.69 (Offizieller Build) (x86_64)