Netty devouring my bandwidth...

Hey guys, i need some help.
I just installed Bungee without knowing it runs Netty. :S
I had truble with it since day 0, since it kills my bandwidth.
My bandwidth cound easyly handle 175 online without netty, but
with Netty, it struggles / lags, even with just 50 online.
I solved this by disableing Netty, but theres no option to do this
in Bungee. Any Idea / Solution? I never seen anyone with this problem :S

Bandwidth:
80/40Mbit

Server:
CPU: I7 3770k OC 4.0Ghz
Ram: 20 Gb
Motherboard: AsRock...

Netty devouring my bandwidth...