Hi everyone,

I'm new here and I have some questions and issues.
So all in all I'm very happy with my new Deco system, but I'm suffering some speed loss. I have a 1000Mbps down and 50Mbps up connection, which is very reliable when testing on LAN.

Upload is alright most of the time wit values between 30 and 50Mbps, but the download is always between 150 and 450Mbps. I could never figure out how fast the delivered in-box-cable is, so I'm testing with a CAT7 1Gbps cable I bought myself, though I get the same results with my own and the delivered cable overall.

My Setup:
First Access Point is next to the router via LAN cable and I disabled the WLAN of the router. I put the AP as good as I can to have breathing room.

Second AP is in the hallway ca. 3m from the first one with a half wall and a glass door between.

Third AP is in the next hallway again ca. 4m away from the second one.

I'm testing on my gaming PC currently.

I had different positions for all three APs and I figured I maybe only needed two, but I have the third one now and it's alright for the last rooms in my flat. Nevertheless how I positioned the APs I get more or less samey results.

At first I had the default configuration and now for testing purposes I have mad it so:
My PC has priority in the network.

AP 3 relies on AP 2 and AP 2 relies on AP 1 (main, connected to router)

Apart from that I left all other options alone.

Am I missing something important? Any tips or hints?

I'll put some screenshots for reference.

Regards