I think my RT-AC86U is toast.. so I need a new router. My house is around 2400sq so I have used ai-mesh with a RT-AC68U as the aimesh node. I wonder what router to get that gives me the best range, speed, and processing power. I have a 1Gbps Fiber connection. My question is what happens if I get like a RT-AX86U and use the RT-AC68U as an ai-mesh node. Does the wireless network slow down to the 68U's speed?