@Flitsz This is really old bug that I reported probably two years ago. In AP mode, Deco M5 and M9 Plus for some reason can't go above 500-550Mbps in their speed test. The problem does not exist in...

@Flavio_Lemos Your Satellite Office should have reported link to Main Deco, if everything is right. The fact it connects to Satellite Hallway tells me Office can't talk to Main Deco. Power off...

@T_Zsolt You will have fully working WiFi mesh with Internet connection. Because you plan to keep Archer router, it is recommended to run Deco mesh in Access Point mode. See this document: How to set...

@ericellenbrook This may happen if you configured Pihole with static IP address. If this is the case, configure it to get IP address from DHCP server (dynamic IP address) and see if Pihole appears in...

@kyoku Start with this: General questions about Ethernet Backhaul feature on your Deco

@Flavio_Lemos This is what I see from your pictures: Satellite Office connects by Ethernet to Satellite Hallway. Satellite Hallway connects by WiFi to Main Deco. ---- That usually means Ethernet link...