Network Performance Issues with Intel X550 NIC

[jmboettger]

I have a 600/60 Internet Connection. My OPNsense consists of a quad core Atom with 2.2 GHz and 16GB RAM.
Speedtest from a PC on LAN side have 60/60 whereas speedtest_cli shows about 300/60 on WAN side of the OPNsense. I have no IPS or VPN configured or active. I tested setting MSS on LAN side to 1300 which did not change anything. Hardware Checksum offloading is deactivated. CPU load is no more than 0.4.
I tried various settings within loader.conf.local which is like the following at the moment. But it does not change anything.

Code: [Select]

net.inet.tcp.tso=0
net.inet.tcp.sendbuf_max=16777216
net.inet.tcp.recvbuf_max=16777216
net.inet.tcp.sendbuf_incr=16384
net.inet.tcp.recvbuf_incr=524288
hw.pci.enable_msix=1
hw.pci.enable_msi=1
hw.ix.enable.aim=1
hw.ix.num_queues=1
hw.ix.rxd=4096
hw.ix.txd=4096
hw.ix.0.fc=0
hw.ix.1.fc=0
hw.ix.2.fc=0
hw.ix.3.fc=0
kern.ipc.nmbclusters="1000000"
kern.ipc.nmbjumbop="524288"

Any ideas why the routing is that poor?