@Emilerdbeer See How to configure Address Reservation on a Deco

@Thirrony When running Deco mesh in AP mode, there is no need to pass all wired traffic through Main Deco. Because of that, it makes sense to offload Main Deco from this, by removing it from the link...

@Thirrony It is enough to place the router between modem and Main Deco, and that is what I would recommend to do as a first step. After you have reconfigured Deco mesh to run in AP mode and confirmed...

@yusufpiskin Your hub will have better performance if it is connected directly to the modem Ethernet port.

@Portercolin Simple instructions. 1. Power off Deco units; 2. Undo everything you done on hub2; 3. Restore your Internet connection to original setup: with hub2 and everything; 4. Verify you have...

@ak13 If you install firmware from the following link on Main Deco M4 V2, you may be able to change MTU size: https://community.tp-link.com/en/home/forum/topic/651248