Having speed in your workflow isn't just nice to have, its saves your sanity :). I wanted to make this tutorial because of how elegant you can make a solution. In this case a simple rig for controlling an environment shader.
This shader rig provides a way to create a sky and sun at any time of day by simply positioning the sun in the sky. There's a bit of constraints and a hint of drivers and python, but all in all, good fund and something I hope you will find useful.
Oh, and something else, we render the scene using the latest version of our network rendering addon too, since we aim to make the rendering as fast as possible.