@CR- These are the things I would check first in such situation: 1. It is possible Deco M4 configuration setting throttles speed. See this document and if it applies to your situation: Using QoS...

@BorisTSpider TP-Link powerline adapter is not compatible with TP-Link powerline capable Deco, such as P9. You can't use them together. Can you clarify: "This happens to me where my desk is but I...

@PapaJD Let's focus on Node 3 and Internet connectivity. You have PC, that would help to troubleshoot the issue. Your Node 3 LED is solid green, correct? You can see Node 3 in Deco app as ONLINE,...

Deco APP 3.0 has been posted in Apple app store. Hopefully, 3.0 for Android is coming soon.

@Samazar With these two room and house in general, you would not know how good coverage there will be, until you deploy Deco units. I would suggest installing WiFi analyzer app on smartphone, to map...

@Penguin1 On Satellite Deco, you should expect to see up to 50% speed drop comparing to Main Deco. This is not Deco mesh fault, it is WiFi mesh technology limitation. I would suggest two things:...