Proxmox host network speeds are terrible, VMs are fine

Running proxmox 8.0.3, spinning up new VM, noticed my netboot was SSLLOOWW. ran speedtest-cli in the host shell, was getting 4Mbits/s, ran on a VM on that same system, was getting 500-600 Mbits/s. I have NO clue what to make of this. Is this a bridge issue in proxmox? I don't think it's a DNS issue, everything else is working, business as usual, even still serving plex and arr on the same system. Any ideas to get me running in the right direction?

Edit: It's DNS. It's always DNS. Disabled AdGuard Home and magically speeds on the host were back. Confused, but have a direction at least.