Okay well I have two xbox's at my house and when me and my sister play we both kind of lag here and there. We found out that both our NAT type is set to moderate. We want to know how to fix it using the ports. We've only seen guides on how to make the NAT type open by ports for only ONE xbox. Um we use a WRT160nv3 router.
I'll check on the forums everyday for a soultion to this ! >_<
Message me on xbox if you can. (: