Hi, I have a 3-pack of M4 devices. I setup the primary as router on my network and have a TP-Link gigabit switch to connect between M4.

When i tested wifi speed on the primary M4 it's only run at 30Mbps. But with the same devices i can reach 60Mbps on both remain M4.

I wonder it's an error of M4 or anything else i should config?

Please give me some advices to solve this issue.

Thanks and best regards,