[mfjordvald]

You're probably not going to get 1Gbps from a distant server even if that server is not overloaded.

I run some traffic heavy servers and even while my servers can be perfectly capable of pushing more, one of the links between me and you is congested so we're both getting shafted. Cogent is especially guilty of this.

Basically the entire Internet is a mess, last mile is a problem, but so is all the major interchange points between carriers.