@KJK the reading is on my client (iphone and ipad) both using the iperf3 application.

Iphone: iperf3 -c server1

Ipad: iperf3 -c server2

server1 and server2 are both connected directly to TL-SG3210XHP-M2.

To clarify, the reading on the iperf app on my iphone and ipad if not run simultaneously is about 600-800. If I run both client at the same time the sum of the bandwidth is still 600-800 which means EAP670 just can't use its 2.5gbps port practically.

  @KJK What's the best way to check the reading on the port? Do I need to use the cli on the switch? I don't see per port traffic data in Omada.

  @KJK the switch statistics on Omada is not real time, it gave me total transmitted data in a time range and it's similar to what I see in iperf client/server. I don't think the switch is the issue since I have tested the 2.5gb port using my desktop pc. The EAP 670 access point seems to not capable of utilizing 2.5 gbps uplink (I've turned on OFDMA). I google searched about this and found many people complained about the same issue on reddit.

  @KimcheeGUN No, I'm fine with single client performance at 600-800mbps, however, I'm also expecting 2 clients can download/upload 600-800mbps from my servers that was connected to my tl-sg3210XHP-M2 since the switch has 2.5gbps poe+ port (connect to EAP670) and 10gbps sfp+ port (2 sfp+ connect to 2 of my server).

All in all, I want to know if I'm able to use the 2.5gbps uplink, otherwise I'm going to either return EAP670 or switch or both.