Hello, I am facing what I believe is a similar issue:
I have an MC888 in bridge mode, wifi and dhcp server disabled, when I connect directly to it I get 200+ Mbps down, but when going through OPNSense I only get 100Mbps.
Since I am still learning networking, by DHCP WAN do you mean the one set in OPNSense at Interfaces->WAN->IPv4 Configuration type?
I have mine set to DHCP and the problem is still here, MTU size seems to make no difference.
I have an MC888 in bridge mode, wifi and dhcp server disabled, when I connect directly to it I get 200+ Mbps down, but when going through OPNSense I only get 100Mbps.
Since I am still learning networking, by DHCP WAN do you mean the one set in OPNSense at Interfaces->WAN->IPv4 Configuration type?
I have mine set to DHCP and the problem is still here, MTU size seems to make no difference.