Hi I have a question about X, does it come with a way to add ETag support to save on bandwidth for return visitors?
Also I have a question about the hiding benchmarks system that’s a bit disconcerting, Say you build a page that hide a a desktop version of the page that has a welcome video and the user comes in via mobile. Do all of those PC elements load (Thus slowing page speed and load times) while your on a mobile device or not?