Hopefully one of the computer buffs can give a reasonable explanation.

Why is it that TVN on the free service is delayed by around 20-30 seconds? I did ask them and was given some old flannel about internet delays, which years ago I may have accepted, except that now, the delay for USA racing wherever you watch it, can be as little as 2-3 seconds. Anyone?, and keep it simple as my knowledge of the inner workings of the net is very basic.