Gobo

Then I’d say get a pcap from the pfsense interface and see what’s going on. Is the systems Mac still in the fw arp table? . If you think it’s a system fw problem, try disabling the local fw and see if things work

Gateway. Does the system properly know how to get outside of its subnet.

Check your route table and arp cache (for gw). Are you using dhcp?

At first I was going to say there is ATI. Then I realized I hadn’t heard about ATI in a while and looked up what happened to it. Then I realized… I’m old.