@BeaverMjr 

If you are testing wired on the main Deco speeds should be something maybe 80 Mbps plus? 

Your laptop probably has a gigabit port like the modem, but the Deco has a Fast Ethernet port so it is rated to only up to 100 Mbps. 

Try swapping the Ethernet cable that the Deco is using going to the modem. 

If you go into the QoS settings there may be a section that shows the upload and download speeds. If so, change those manually to reflect your subscribed internet speeds.

I have tried a new ethernet cable and it did not help. I also tried rebooting the main Deco and going wired from the main unit. I am getting download speads, less than 10MB sometimes dropping below 1mb. I also set the QOS to 1000Mbps up and down to allow the fastest speeds. I can not explain why the device is not allowing speeds at near 100mb which is the service I pay for. what else can you recommend besides going officespace on the system?

I tried using the deco app and found out that all the devices are gettting the signal source as the main unit which is in the basement. The second unit on ground floor and the other 2 units upstairs. How do I set the 2 on the second floor to use the unit on the ground level as their signal source?

And how do I get the units to allow faster up and down speeds more inline with the 100MB service I pay the cable company for?

@BeaverMjr 

Try going to the furthest Deco device, factory resetting by holding the reset for one second, then add it back into the Deco network. What the Deco should do is see what connections are available, then choose the one that works best. As the Deco compares the satellite Deco with the main, the extra network hop may not be faster than connecting directly to the main Deco even though it is further.