Hi, I've recently made a post (in Reddit) about upgrading my router to see if it improves my TP-Link Deco M4 performance. It seems that upgrading the router is pointless as it is better to get another Deco in between the Main Deco and the one located further.

I've gotten another M4 Deco to place in between them, but it seemed that the furthest Deco still connects to the Main Deco in the living room instead of the one in between. This makes that I still have less than half of the speed my subscription plan is (300 Mbps up/50 Mbps down)

Here's my Networking plan before:

New networking plan:

Rough sketch of the Deco connectivity

Any ideas on what to do? any help is appreciated