Try the netduma. It is built especially to combat lag by providing your with the ability to set the range of who can join your network. Just type in netduma gaming router and you'll find more info. It cost me $200 but it's worth it
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please don't. The netduma hardward is butts dude. Its like 5-6 years old on the HW side. The firmware may be good, but you realise this doesn't even get 1GB over ethernet. 500MB when you have things turned on?