I believe that light travels through fibre optic cable with the proper booster at a rate of approx 2/3 the speed of light. I do know the word "instant" is not the proper word to use, but for the people that do not understand what latency is then it is a close to "instant" as can get. a 20-40ms latency is pretty good considering if you were to go by satellite or radio frequency you would be 100 ms or even higher depending on the distance you are from the repeater.

The amount of data that can be sent over fibre optic is incredible. I was reading that you are now able to reach speeds of 100 Gbit/s compared to 10-20 Gbit/s that older lines/systems are running. This does allow a lot of data to be sent to remote destinations at an extremely fast rate. The 40ms that you are talking about is faster then you blink your eyes. Now you are really making an argument about that?

I know i have bad latency due to the fact that I have to get wireless high speed internet where i live. I have a 75 ft. tower that receives a radio signal from a tower that is no more then 1/2 mile away. my latency ranges from 45-130 ms. I really envy people ho live in large cities getting "true" high speed internet with a latency of 10-20 constantly, that would make my FF gaming experience so much better.