I just picked up a RT-AX86S, planning for the eventual failure of my RT-AC86U, and have setup the AX86S as the router, AC86U as an AP(Wired, not AiMesh). I am on fibre to home, 500/500 plan, yet the ISP is doing a month long promo of 1.5G/1.0G. Fibre modem is Bell HH4000, and the router...