[diplodocusaur]

You can also play faster than the 2x speed limit cap using

document.getElementsByTagName("video")[0].playbackRate=4

is there a way to also make this the default max play speed without entering it in console?

[wjdp]

I'm using https://github.com/codebicycle/videospeed

This extension adds keyboard shortcuts as well as a UI to all <video> elements (YT and other sites). I have 'G' set playback rate to 2.2x.

[Aromasin]

I use the "video speed controller" extension. You can set it to whatever speed you like, and it will default videos across all websites to that. You can also set exceptions for things like Netflix. There is no way to set YouTube default speed unfortunately, hence the work around.

[madsohm]

I find that the audio gets out of sync when playing faster than 2x. Have you also noticed that - and perhaps have a solution?