Today i bought an AC1200 Deco S4 (home Mesh Wifi
This home mesh wifi system has up to 867 Mbps download on 5 Ghz band.
After a speedtest, it seemed that i only got 9.47 Mbps download!

I tried further to disable the 2.4 Ghz band in the setup, but, to no avail!
I usually got up to 90 Mbps !

I installed the latest firmware on all three wfi devices!

Thus, what's the problem here??
PS. i am the only person currently using this deco network.
This system has no added functionallity, other than the functionallity/speed i already got!
It sadly downgraded my whole wifi system.
So, if anyone has a clue,what's the problem here is?
The mesh system is obsolete in this form.

Thanks for any answer!
Regards, Ronnie