Please run iperf3 -c 127.0.0.1 and post results here to make router database

|QNAP QHora-301W | Qualcomm IPQ8072A
(Quad Core A53, 2.2GHz) | Snapshot 6.1.80 |

root@QNAP:/tmp# ubus call system board
{
        "kernel": "6.1.80",
        "hostname": "QNAP",
        "system": "ARMv8 Processor rev 4",
        "model": "QNAP 301w",
        "board_name": "qnap,301w",
        "rootfs_type": "squashfs",
        "release": {
                "distribution": "OpenWrt",
                "version": "SNAPSHOT",
                "revision": "r25402-5b1d6d4607",
                "target": "qualcommax/ipq807x",
                "description": "OpenWrt SNAPSHOT r25402-5b1d6d4607"
        }
}
root@QNAP:/tmp# iperf3 -s -D && iperf3 -c 127.0.0.1
Connecting to host 127.0.0.1, port 5201
[  5] local 127.0.0.1 port 56274 connected to 127.0.0.1 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   896 MBytes  7.51 Gbits/sec    0   1.06 MBytes
[  5]   1.00-2.00   sec   847 MBytes  7.10 Gbits/sec    0   1.06 MBytes
[  5]   2.00-3.00   sec   858 MBytes  7.20 Gbits/sec    0   1.06 MBytes
[  5]   3.00-4.00   sec   859 MBytes  7.21 Gbits/sec    0   1.06 MBytes
[  5]   4.00-5.00   sec   848 MBytes  7.11 Gbits/sec    0   1.06 MBytes
[  5]   5.00-6.00   sec   852 MBytes  7.15 Gbits/sec    0   1.06 MBytes
[  5]   6.00-7.00   sec   853 MBytes  7.16 Gbits/sec    0   1.06 MBytes
[  5]   7.00-8.00   sec   876 MBytes  7.35 Gbits/sec    0   1.06 MBytes
[  5]   8.00-9.00   sec   857 MBytes  7.19 Gbits/sec    0   1.06 MBytes
[  5]   9.00-10.00  sec   856 MBytes  7.18 Gbits/sec    0   1.06 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  8.41 GBytes  7.22 Gbits/sec    0             sender
[  5]   0.00-10.00  sec  8.40 GBytes  7.21 Gbits/sec                  receiver

iperf Done.