The performance is very bad and the developer doesn't seem to be willing to fix it. Furthermore some features are missing and the ones that do exist don't work reliable, probably because of the very bad performance.
no. (reviews are not for this). If there is aynthing, please join the bug report discussion/s https://github.com/code-charity/youtube/issues?q=state%3Aopen%20label%3A%22z%20FireFox%22 thanks
