what pages where slow for you? for me navigating examples or readmes is quite fast, loading some examples can be a bit slow, but those examples also need to load data first.
The about, download and development pages are fine since they appear to be loaded when first hitting the site (non-zero part of why the initial page load takes 4 seconds and 46 requests to complete). They also appear to be injected into the DOM at this time, along with at least the side panel navigation components of the other pages, strangely in p tags.
The readme is fine, it appears to load the content only when the page is accessed.
The examples section is OK, _after_ it loads, since the first time you click on examples it loads all of them for some reason, another 56 requests and several seconds. Some the examples do render slowly which is actually the most concerning issue since all the data has already been pulled to the client (minus a couple tiny SVG files which are cached), thus any slow down you see there is from the JS rendering the view and its not quick.
The documentation load time is terrible, 140 requests as it literally loads _every_ components JS file individually when you first hit the page. Again despite all the data being there already, switching between component documentation views is not snappy in many cases. Clicking on 0x.image for instance spikes CPU usage and takes over a second to render.
The two stand out issues are:
1) loading a ton of JS and nodes into the DOM when it isn't yet needed.
2) slow client side rendering of the views, it shouldn't take a second to render a view when all the data is already client side. It could have just pulled a pre-rendered view from the server in that time.