@krisw So, you changed router and updated Deco firmware. Two changes, always challenging to figure which is responsible (or both, in combination). As a troubleshooting tip, I suggest to power off...

@Joakim77 "One of the X90's are connected through a switch that is connected to my modem" Do you mean: ISP Modem<--Ethernet-->Switch<---Ethernet--->Main Deco If yes, you may be having ISP router, not...

@Achilleas If you want to add another Deco node to your Deco mesh, you should buy additional M5. Deco X20 will not make much difference for your Deco mesh comparing with M5, but because X20 is on...

@klapaucjusz1 All Deco models I listed will work with the network you described. Two switches is not a problem as long as they are compatible. I have Deco unit connected to 5-port switch, which in...

@klapaucjusz1 TP-Link has large selection of WiFi 6 capable Deco mesh models. I'll give you my recommendations for three different price and performance segments. Budget: Deco X20. Recommended...

@klapaucjusz1 a) Is it possible to create the network described above? Yes, it is possible with Deco mesh. b) which systems would be suitable for this network? This is TP-Link Deco forum. Deco is...