Large PCAP import did not show all nodes

[ee68825c]

I understand this is a tool meant for ICS / SCADA networks, but I have had some luck using it to map other network types. A few months ago I utilized it to import ~200GB of packet capture, and while the system took all the data and did not crash, there were a lot of nodes that did not appear during this import. I narrowed the traffic down to specific ports (show all SSH traffic, etc) and this identified additional hosts.

Is this a known issue, or is this because it is data pulled from a non-ICS/SCADA network?