Client-side performance matters - of course. That's why we optimized DotNest to be fast out of the box not just when work is done on the server but also on the client-side.
For example the Combinator module is enabled and configured on all sites by default to give CSS and JS bundling and minifications. All static resources are served from a cookie-less (practically a CDN) endpoint (dotneststatic.com). And some more tricks...
YSlow is a very easy to use tool to get some metrics about the client-side performance of a site. The tool measures performance on a 1-100 scale, 100 being the best. Out of the box a freshly created DotNest tenant has a YSlow score of 98! This hardly gets any better. See the screenshot below!
Don't take our word for it, check it out yourself!