I've got a fairly small demo file (~1MB) on the site, and often it'll take a long time to load / render. The scripts / images it loads are all tiny, and should probably be cached in most cases as well, but it's common to find that there is a substantial delay before results appear on screen.
This could obviously be Omniscope, the server, the internal network, the connection to my laptop, or my browser's rendering speed in theory, but I'm not having much luck in tying down what's causing it to run slowly.
Ideally, I'd like the file to load and run quickly over a wet string - the sort of thing you encounter with hotel / event / guest wifi. I've made it tiny already, and the libraries required on load are very small, so I'm not sure where to look next for optimisations.