@Rich24 Check this link to see if your Deco M4 can be upgraded to firmware that supports connection preference: https://community.tp-link.com/en/home/forum/topic/651248 This is the feature you need...

@Renard Here is the summary of changes to your home network I am going to recommend: The plan is to take Main Deco from cottage, bring it to house and connect to Ethernet cable that comes from the...

@Renard I am going to start with an assessment of what you have, and then will provide you with the plan that you should be able to execute now, and without need for getting new or additional...

Renard wrote Would it be better to disconnect the main deco and just have it connected wirelessly, having checked the packaging they can operate at 300 Mbps on 2.4GHz and 867 Mbps on 5 GHz @Renard...

@Renard In our conversation my first objective is to create network diagram for your place: what is connected to where. Then, I will need to figure how Deco mesh fits in this picture, I still have...

@stavrov Have these powerline adapters established connection to each other? If they have status lights, you can check that easily. Usually TP-Link powerline adapters are compatible with Deco mesh,...