I don't know if it's my machine or whether my expectations are too high, but every generated image looks like the same blurry version of the original but with a different colour pallet. I certainly don't get anything as beautiful as the output examples.

This happens regardless of the source content I use (any of the examples or even my own uploaded files) nor any of the reference styles.

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36

(Chromium running on ArchLinux AMD64)