I am trying to test the performance of the 2.5 gbe network port on my RT-AX86U (running merlin). I have a 10 gbe NIC on my Windows 10 computer, which I have connected directly to the 2.5 gbe port using a brand new CAT6A cable. I can see in Windows that the link has synced at 2.5 gbe, and the router is showing this as well. I used ssh to connect to my router and run iperf3 on my computer and on the router. regardless of which device I use as the client or server, the maximum rate that I have seen in any of these tests is 1.26 gbps. Prior to my having purchased a 10 gbe NIC, the maximum speed was around 920 kbps. So, I can see that it is clearly better than 1 gbe, but I was expecting to see numbers closer to 2 gbps. Am I expecting too much? Any suggestions of what could be going on here? NIC drivers are the latest version as is merlin. I don't currently have any other 2.5 gbe devices that I can test so I don't know if the issue is on my router or my laptop. Thanks in advance.
Jon
Jon