When it works, it works very well. I imagine that YouTube makes adjustments that have to be compensated for. The creator does an excellent job maintaining that compensation, although sometimes more time is required than others. In my mind that does not reduce the quality of this add-on. The UI is clean and straightforward. A 4k option in the future might be a nice thing as more content creators are offering that resolution and more people are adopting 4k as the resolution of their daily drivers.