PfSense in Proxmox trouble

I wanted to try out pfsense in proxmox. At the moment I'm using Sophos UTM as a VM on my proxmox server. And it works fine, troughput is great but had soms issues with it and I saw the new PfSense build video and wanted to try that. But I cant get the networking right. If I pass the virtual nics to the pfsense-vm it doesnt get an uplink. Where as my Sophos vm gets them right away. Any hints?