@Tony My 3 Deco M9 Plus are in 3 spots of the house downstairs in straight line fashion, and they works fine for normal use. Main router is in the middle. However, performance in several bedrooms...

I have a 3-unit Deco M9 Plus. I need to cover more area. I am trying to configure my old Asus as WDS repeater to Deco mesh but is having diffulty. Thanks