Airport extreme seems to place a limit on gigabit ethernet I have a gigabit internet which goes into my airport extreme. Everything is working fine now except the fact that the Gigabit Ethernet port has a limit of 200mb/s when tested. If I plug the main internet cable into my computer and test the download goes to 900+mb/s but when I plug it into Airport extreme and connect to it's (gigabit) ethernet I hit that 200mb/s limit no matter what. 

I tried with different cables and whatnot, the ethernet is limited. Any ideas?
After hours of pulling my hair out I'm going to answer my own.

TL; DR: Airport Extreme (at least the 2013 edition which I own) is crap for gigabit networks.

It's advertised gigabit ports cannot go over, after much testing, 205mb/s because of the WAN to LAN routing which is horrible.

This is a decent wireless router but overpriced for what it offers in terms of range and Ethernet performance. If you buy a gigabit internet do not make the mistake and buy it because it can't go faster than those 200mb/s.

As I said, after much reading and testing, your best bet is with a device that has hardware routing and I strongly recommend you take a look at this page for comparisons of various devices in terms of "WAN to LAN Throughput".

I just ordered a ASUS RT-AC87U which seems to offer a great signal and solve my gigabit issues. I will update this answer once I receive it and manage to do some testing.