Do you have 2.5Gbps port on Virgin router, too?

@Seyeclops I would recommend Option 2. This document will explain how to promote X95 to Main Deco after you added it to Deco mesh as Satellite Deco: How to Set up the Satellite Deco or a new Deco to...

@Dilby2k For speed testing, disable 2.4GHz on Main Network, to make sure Deco does not push your smartphone to 2.4GHz. Then, try speed tests again. Also, make screenshot of top part of Satellite Deco...

@Patrick1506 See if switching Deco mesh to Access Point mode will help. Switching a Deco to Access Point (AP) Mode You can also connect that printer with Ethernet cable to Satellite or Main Deco. Try...

@Hoffies Cat 5E should be enough. I am also using commercial grade Cat 5E cables, I've got them from my friends at very large data center. Cat 5E cables can handle gigabit speeds and are OK for Deco...

@Misha12 You can wire just the two Satellite nodes. The one that can get the signal from Main Deco will connect to Main Deco by WiFi. That setup is discussed here: General questions about Ethernet...