It’s good, I use it all the time, so much quicker to change speed than default way.

But when an ad comes up it resets speed to 100% again. If I change the speed with the normal YT changer it will not reset. Is there any way to fix that please?..

I'm using these 2 add-ons to deal with YT ads:

YouTube Ad Auto-skipper
Mute Youtube ads

- and I thought it was maybe one of those doing it but I turned them off and it still did it.

So there must be something different about the way this add-on changes the speed compared to the default YT way that is causing the issue.

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UPDATE 2025.10.09. - Now when changing the speed it effects all videos that are in other tabs/windows too >.< Cringe...
Please fix that, so it effects each tab separately and defaults to 100% when going to a new tab.