It's hard to get a sense of how it'll look with 'big messy data', when it's sample dataset is so tiny, at 14 nodes and 21 edges. Is there a way to see how it'll look with a ton of data?
Edit: It's an excerpt of the Enron dataset.
It's getting noticeably laggy for me at 611 nodes, but below you say it shouldn't be a problem to do 5k. Have you actually tested that kind of data?
I was hoping for something that maybe looked like a set of hierarchical clusters. Where I could drill down level by level.