>I'm optimizing for first-time visitors As a first-time visitor I had a very bad experience while waiting for your JS to download and generate the content - in

>I'm optimizing for first-time visitors As a first-time visitor I had a very bad experience while waiting for your JS to download and generate the content - in the meantime I was looking at a completely empty black screen. Optimizing for first-time user experience means giving your visitors the content they came for as soon as possible, which is not what you’re doing.