@RandySea2 When you run "Test Internet Speed" from Deco app, it will show speed of wired connection between Main Deco and Internet. If it shows problems, these will be between Deco and Internet. Not...

@Kelvinwong Have you configured your modem to run in "bridge mode" when you installed Deco mesh? If you did, it'll disable all but one Ethernet port on modem.

@Yaminator Have you checked Main Deco logs, as I suggested, to see if Main Deco reports losing connection? If yes, please post here how often it happens in current logs, and duration of each...

@MLVC MLVC wrote How can you check if the IP addres of the Deco X60 is public? Follow Step 5 of the link https://www.tp-link.com/support/faq/1797/ in your Deco app: "Go back to the Advanced page, tap...

@Hazree If you find that disabling 2.4GHz increases WiFi speed substantially, I'll share with you how I dealt with devices that can only run on 2.4GHz, in my household. What I did would be applicable...

@Hazree I am not sure if it will be applicable to X20 or not, but with my M9Plus and M5 I could only get transfer speeds faster than 100Mbps when I disable 2.4GHz for Main Network in Deco app and...