How to set the default playback speed on YouTube?

Question

YouTube

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Answer 1

https://github.com/igrigorik/videospeed
in the setting, check the box "Force last saved speed. Useful for video players that override the speeds set by VideoSpeed". I change the speed myself by pressing "< >". For each type of content and pronunciation, you need to adjust individually.
Alternatively, Improve YouTube! For some reason, I started having difficulties with playback through it, but there is also such a setting, including setting a constant resolution.