Because chrome does not have,firefox also, touchscreen support. If you will use tablet with keyboard&mouse you will notice that scrolling with finger is same as mouse wheel scroll. So there is a lag with finger.
Right, I agree. I just thought maybe someone found a workaround..
At least Edge is going to have add on support really soon so we should expect adblock in the near future.
But even in Edge, even though youtube can play everything smooth, the interaction is very very slow. Changing to full screen, back to normal, pause, play.. very slow. Scrolling is smooth and the video playback is smooth though.