Not sure what you mean by wireless or wired backhaul. How do i check?
At the slow node, the WIFI symbol actually shows full strength ... but still only recording 28mbps.
Dun have floor plan now but typical 3 bedroom 1000 sf apartment with living room leading to a passageway with 3 bedrooms. The slowest node is in the further bedroom. The 1st node (which is right next to the modem) is in the living room. The weird thing even like 2 cm next to my 1st node, I'm recording only 93 Mbps...
"backhaul" is the term used to describe how the satellites are connected. if cable, then wired backhaul. if they are wirelessly connected, then wireless backhaul.
wireless backhaul is slower, higher latency.
it would be faster if the satellite is connected by 5GHz, but sometimes it uses 2.4GHz.
the speeds you mention are in line with 2.4GHz. if the device/client reports 5GHz connection at this slow speed, your backhaul could be at 2.4GHz.
The mesh can connect in daisy chain or hub-spoke.
daisy chain is like router-->satellite1-->satellite2.
the bandwidth almost halves before and after every intermediate satellite.
ideally, for mesh, the router is in the centre, but if it is at the far end eg hall, and you are connected at the furthest satellite, you will get strong signal from that satellite, but slower speed.
close to 1Gbps wifi speed is possible with the right clients eg 3 stream devices. most are 2 stream, so max 867 connection and realistically 600+ on 5GHz.
what device are you using? eg recording? if computer, can you upgrade the wifi adapter?
I've not used the m5 so i dun know if you can force 5GHz as the backhaul
(even if you do, does it also allow devices to also connect onn 5GHz?)
if you can wire up the satellites, then you will get much better performance. But i acknowledge that may not be possible for various reasons.