What makes you think it's the actual router?
There is a lot of variety across different internet connections and servers.
Also, to touch the elephant in the room, a lot of people are blaming connections / routers but in reality they are not as good at the game as they think they are.
I have tried many setups with different routers, and even connecting my PS4 straight to internet (NAT 1) and none of it makes a difference for me. The only reason I use Netduma routers is the ability to filter out server locations.
So really I don't know what you guys want them to fix.