Video Controls Plus

Can you add a toggle button?

I would love to have a button that goes back and forth between a fast and a slow speed like this youtube speed controller: https://chrome.google.com/webstore/detail/youtube-speed-controls/naalfmaaomhjpbndelnlijacdniggpjn?hl=en

You hit the button once to get it from 1x to 2x, hit it again and it goes back to 1x. Maybe have dynamic speed have its own button at least so it can be done manually if desired? great app though thanks! Just is alot more useful if you can quick toggle it to go faster