Hello,
When I run my TRB500 in bridge mode, I am only able to get around 150Mbps throughput from the internet. If I switch to NAT mode, I can get around 550Mbps on my 5G connection.
I also register some minor packet loss and spikes with increased latency (peaks up to 700 ms latency) to 8.8.8.8 when running in bridge mode. When running in NAT mode, the latency is consistently around 40 ms measured to 8.8.8.8 and no packet loss.
My firewall (OPNsense) is using DHCP - and the only thing that I change is whether I run the gateway in bridge or NAT mode (same modem settings etc.). My firewall receives the IP, either the public IP in bridge mode or a private IP in NAT mode, just fine by DHCP in both cases.
I'm running firmware TRB5_R_00.07.04.3 and modem firmware RG501QEUAAR12A07M4G_04.001.04.001.