Comment by kiwijamo

They limit the buffer to around 30secs or so like all other streaming services but otherwise 95%+ of the time it just plays smoothing with no buffering at all from start to end. YouTube is generally in the top 3 of the video streaming services I use. Even on 4G wireless (which I occassionally use) it works well enough which is impressive as other video steaming services struggle (with the sole exception of Netflix which is probably the only one better than YouTube).