Model: Deco M4

Hardware Version: V1

Firmware Version: 1.1.0

Intenet speed: 120Mbps

I have 3 nodes.

Node 1 is main and is conected to internet router

Node 2 is connected wireless to node 1

Node 3 is connceted wireless to node 1, witch give a por signal and a slow connection 

How can i get node 3 to connect wireless to node 2?

Node 2 and 3 is both setup close togeter next to a staircase. this to get the best signal up to the topp floor.

Setup:

Speed tests in the house:

Node 1: 120Mbps

Node 2: 101Mbps

Node 3: 34Mbps