cAP-AX bandwidth test

Test setup :

iPhone14proMax-iperf3 client ->->->->->-> cAP-ax--------Poeinjector---------Ryzen7 laptop+dhcpserver+iperf3 server.

I get 500Mbps average result in a 5GHz/ax/Ceee channel, tcp mode, is this an expected value ?

Single of multiple streams?
How does the wifi config look like?

I would expect more.

Five streams

Only 5GHz radio enabled, no channels configured, just basic configuration with SSID, security and datapath - bridge1 with ether1 port)

Curious thing: 500-550 Mbps with iPhone @1mt from AP, 800Mbps with iPhone @10cm from AP (speed as good as unachievable situation).