Even the Customer acknowledges that data rates of over 90 Mbit / s can not be reached. But even that is not even nearly be reached in a new building. The connection bobs around between 20-40 Mbit / s, so the internet connection is lame at about 15-20 Mbit / s, as lt. Devolo also still other data would be transmitted. Therefore, the connection between dLAN adapters does not match the download data rate. Sad but true... The worst solution for fast Internet!
PS: Of course I have all the advice / instructions tried to comply. But a dedicated circuit is, there is not at a computer workstation. But even after removing "unnecessary" power vacuum cleaner to improve anything. BUY IT IS NOT !!!