To perfection, this addition a lot of still missing but... :) I'm glad that it has the basic features that improve reception of content from the YT.
Where is the changelog?

該擴充提供了很多不同選項來讓你自訂你喜歡的 youtube ，讓你可以選擇一些更適合自己的方式來使用 YT。不過有些機能在作用的情況下，可能會有一些不自然的衝突，例如介面的偏離，影像對不上外框等等的狀況出現，所以稱不上是相當的穩定。

Vou usar depois avalio melhor ou não !

It's very usefull tool, unfortunately the youtube websites response noticeably slower.

The addon used to be amazing, but recently the performance has been horrible. It is almost unusable now.

Overall, this is an amazing add-on, and the dark themes really improve the look of youtube itself. However, this causes the youtube website to be very unresponsive. Moving the mouse over suggested video links causes the window to not redraw and it takes several seconds for tooltips to appear aswell as the URL's being hilighted.

I'm finding it unusable like this and had to disable it.

Very good, but has bugs in polish translation. Self-explanatory description not working.

In my mind not bad, but nothing new...