QUOTE(blacktubi @ May 13 2021, 10:32 PM)
What is the speed you're getting from the second unit now?
I am subscribing to UniFi 300Mbps.
This is the average 3 speedtest to Internet via
slave deco WiFi.

This is the average 3 speedtest to Internet via
master deco WiFi.

This is the average 3 speedtest to Internet via
master deco ethernet.

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This is the speedtest to internal speedtest server via
slave deco WiFi.

This is the speedtest to internal speedtest server via
master deco WiFi.

This is the speedtest to internal speedtest server via
master deco ethernet.

I can get decent speed when connect to Master Deco. But my speed limit to 130Mbps when connect to Slave Deco. Other than relocating M5 deco location, do TP-Link model (eg: M9 and X60) with dedicated wireless backhaul help to get better speed?
If it won't help, then I can only try to find the "feng shui" spot for both Deco.