@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...

@Rafid_Anjum I hope TP-Link Support reads your post and shares it with "Senior Engineers" for their feedback, but I can suggest you workaround that is quite simple and not expensive. >For recheck,...