Youtube x2 speed is not working good

Description of the issue: when I want to be a x2 speeded youtube video, it starting to goes like x10. I have to stop the video, move the play bar, and then it goes x2 again, but if I tab my browser, when I go back to youtube, it is x10 again.

Exact URL of the website in question: youtube.com

Does the site work as expected when using Chrome? Yes, it works

Brave version (check About Brave): Versión 1.19.88 Chromium: 88.0.4324.96 (Build oficial) (64 bits)
(https://brave.com/latest/)

Unusual, does 1.25 / 1.50 work? 2x is certainly a lot faster, maybe it feels like 10x, but is actually 2x? At 10x I would expect the video to sound like Alvin and chipmunks

I didnt try x1. 25 or x1. 5, and now I cannot try, maybe later.
But I’m sure x2 does not work, I always watch videos 2x, and with brave it goes good at first, but after a few seconds the video accelerate. Then, when I stop the video like 2 times, it start works correctly

I always watch my YouTube Reaction videos at various speeds from x1.25 - x2 speed. I even fiddle with the Custom Speeds for piano videos at x0.75 speed. Seems to work fine, but i guess your mileage varies.

How I can send you a video? I’m a new user so I can’t attach, maybe an email?