As I browse the demo site if I don't click slowly I get flashes of stale content that gets replaced several seconds later as the page updates. There are no loading or spinner type interactions during loading.

Likewise if I click on a button, say to visit a genre nothing happens until the new page is loaded, during which I can click on more buttons under the false assumption it failed or wasn't clickable. Then the new genre loads, only to be replaced momentarily with one of the pages I clicked on while I was waiting