i have an Archer C7 v5 with OpenWrt 19.07.3 r11063-85e04e9f46 / LuCI openwrt-19.07 branch git-20.234.16293-a82f67e (Kernel 4.14.180). My wired network stock at 300 Mbits/sec. I tried to activate "Software based offloading for routing/NAT" but no difference. I tried different Ports, Kabels, Clients and change the the firewall zone to unspecified for the lan interface.
What can i do further?
thank you for the reply. The C7 is not my main router therefore there is no NAT. It is used as a Switch and a WLan Router which is connected to the main Router (internet, dhcp) over cat7.
C7 ----------------------- Switch -------------------- Main Router ----- Internet
/ \ \
/ \ \
WiredClient1 WiredClient2 WiredClient3
So i tested the transfer from WiredClient1 to WiredClient2 and from WiredClient1 to WiredClient3 but the speed stuck at 300 mbit. So the Problem seems to be the speed of the switch.
Is that a known problem of the c7 openwrt firmware?
Problem was on WiredClient1. I connected WireClient1 directly to the Switch and get the same results. It seems that something broke on the Client at the same time i installed the new router. The transfer between WiredClient2 and WiredClient3 is about 900mbit. Thank you for your efforts.