Greasy Fork

This script breaks playing videos at higher speeds, with it enabled all videos always play at 1x speed =(
I was so happy when I found this script, but I can't use it if I can't play videos at higher speed. Can you please fix it?
I use Firefox. I tested it in Chrome and it works in Chrome! But not in Firefox =(

I didn't notice that, but now I investigated this bug and unfortunately found that it is a Firefox's bug. (´･ω･`)
https://bugzilla.mozilla.org/show_bug.cgi?id=1517199

So I can't fix the bug by my script. I'll add a note on the description of the script.

Actually I also love Firefox and it's my main browser, but I use Chrome for some sites including YouTube.

Heh, I used to play youtube videos in PotPlayer just to boost volume. I'll just play them in chrome instead with your script, it's easier ^^ PotPlayer's buffering is so slow...
Thank you for this script!