Netgear RS700 results in 700Mbps down and 400Mbps up on the 5GHz AX. Download is equal, upload is double that of GT-AX11000 (older hardware so ok I guess).
Netgear RS700 results in 1,400Mbps down and 800Mbps up on 6GHz AX (WiFi 6e). Download is equal, upload is 8x the upload of RT-BE96U on the same band.
Clearly, ASUS routers have issues with upload speeds over wifi, no matter the client. 5GHz band appears to be a bit better but the 6GHz band is a total distaster.
Considering the same issue is present even when ISP hardware is disconnected and I am testing to a hardwired iPerf server (on my NUC), the problem is 100% on ASUS.
You still don't have a 6 GHz band on the GT-AX11000...
Below are the test results running iperf3 between my laptop and my desktop, using a GT-AX6000. It averages similar numbers as the Netgear RS700 you tested with. However, for some reason, the router doesn't appear to like my phone, despite synching at 2401 Mbps, I don't see speeds over 230-240 Mbps on the phone.
This leads me to a question here, have you tried with a few different clients? As different WiFi clients perform differently with different router hardware. Your router has Broadcom chips in it and would most likely work best with other Broadcom based devices, but as you can see, it has no issues with my Intel/Killer network card in my laptop, but doesn't like whatever module Google uses in the Pixel 6. That said, running Ookla's speed test, I get as I mentioned 250-270 Mbps on my phone...
Code:
Accepted connection from 192.168.50.56, port 53440
[ 5] local 192.168.50.75 port 5201 connected to 192.168.50.56 port 53441
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-1.00 sec 46.3 MBytes 388 Mbits/sec
[ 5] 1.00-2.00 sec 49.0 MBytes 411 Mbits/sec
[ 5] 2.00-3.00 sec 45.4 MBytes 381 Mbits/sec
[ 5] 3.00-4.00 sec 52.0 MBytes 437 Mbits/sec
[ 5] 4.00-5.00 sec 52.3 MBytes 439 Mbits/sec
[ 5] 5.00-6.00 sec 53.7 MBytes 450 Mbits/sec
[ 5] 6.00-7.00 sec 47.4 MBytes 398 Mbits/sec
[ 5] 7.00-8.00 sec 49.1 MBytes 411 Mbits/sec
[ 5] 8.00-9.00 sec 49.8 MBytes 418 Mbits/sec
[ 5] 9.00-10.00 sec 51.4 MBytes 430 Mbits/sec
[ 5] 10.00-10.05 sec 2.62 MBytes 467 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.05 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.05 sec 499 MBytes 417 Mbits/sec receiver
Also, by running -P 2, you can test with two parallel streams in iperf3, which yields higher speeds on my phone.
Code:
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.04 sec 209 MBytes 174 Mbits/sec receiver
[ 7] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender
[ 7] 0.00-10.04 sec 208 MBytes 174 Mbits/sec receiver
[SUM] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender
[SUM] 0.00-10.04 sec 417 MBytes 348 Mbits/sec receiver
and laptop.
Code:
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.04 sec 359 MBytes 300 Mbits/sec receiver
[ 7] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender
[ 7] 0.00-10.04 sec 358 MBytes 299 Mbits/sec receiver
[SUM] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender
[SUM] 0.00-10.04 sec 717 MBytes 599 Mbits/sec receiver
In other words, it helps to know how to use the various performance tests as well.
You can also try -P 4, which in the case of my phone yielded speeds of over 660 Mbps on average.
For a laugh, I ran -P 12 and got over 1 Gbps...
Code:
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 5] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 5] 0.00-10.02 sec 110 MBytes 91.8 Mbits/sec receiver
[ 7] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 7] 0.00-10.02 sec 113 MBytes 94.9 Mbits/sec receiver
[ 9] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 9] 0.00-10.02 sec 114 MBytes 95.3 Mbits/sec receiver
[ 11] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 11] 0.00-10.02 sec 110 MBytes 92.1 Mbits/sec receiver
[ 13] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 13] 0.00-10.02 sec 110 MBytes 91.9 Mbits/sec receiver
[ 15] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 15] 0.00-10.02 sec 112 MBytes 94.2 Mbits/sec receiver
[ 17] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 17] 0.00-10.02 sec 109 MBytes 91.1 Mbits/sec receiver
[ 19] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 19] 0.00-10.02 sec 108 MBytes 90.7 Mbits/sec receiver
[ 21] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 21] 0.00-10.02 sec 110 MBytes 92.1 Mbits/sec receiver
[ 23] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 23] 0.00-10.02 sec 109 MBytes 91.2 Mbits/sec receiver
[ 25] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 25] 0.00-10.02 sec 109 MBytes 91.6 Mbits/sec receiver
[ 27] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[ 27] 0.00-10.02 sec 109 MBytes 91.6 Mbits/sec receiver
[SUM] 0.00-10.02 sec 0.00 Bytes 0.00 bits/sec sender
[SUM] 0.00-10.02 sec 1.29 GBytes 1.11 Gbits/sec receiver