Network congested, but network optimization fails structurally
I've been having problems with my Deco M9 plus system for several months now.
The network performance is poor, but when I perform "Network optimization", the scan fails with the message: "Detection failed. Please try again" and "Some frequency bands in the current network have a high degree of channel interference. It is recommended that you update them now.".
I retry this every now and again, but the error consistently appears.
What frustrates me is that this is that firstly, it is a system crippling issue which has been present for at least four months (see firmware version) and secondly, there is no possible way to change the channels manually, which I would expect to be basic functionality.
How can I resolve this issue?