I have a deco x68 as my main with 4 nodes. One of the nodes , the farthest from the router & main deco is an Ethernet connection I will call office. I have a node in between the main and the office node. However, it is much closer to the office than basement node. This in between node had a week signal and I wanted to connect it to the office. I found a forum that discussed this issue but the thread is locked. I was playing around with the app and found that if you click on a node it gives you the option of connection preference. From there you can navigate to the next step. Turn off Auto then choose your preferred node to connect to. After making this change, my in between node went from a weak signal to medium.  The old thread ended in 1/2023 so forgive me if this is old ne2s.