Deco X20 node is Stuck on 100mb, disabling 2.4 result 5ghz with low reception. all the nodes are on ac mode, all of them connects through the same eth sw. also, I can't creat another network with hidd

I have 2 Deco X20 units. I have the main unit plugged into a gigabit switch and the 2nd unit as a satalite. If i use the units as a router then i can pull my full internet speed of 500/300. but when i