I believe it's because of burst technology and other QoS. It helps to have a burst of data ready for queue, but will throttle down over a sustained time. I b

I believe it's because of burst technology and other QoS. It helps to have a burst of data ready for queue, but will throttle down over a sustained time. I believe this also helps overall network so that you do not continue sending in repeated same, say, from requested again over and over when the internet is slow / does not work adding to congestion.