Does not work. Images look cloudy, matted, low-res and generally horrible. And FYI I’m using a color-managed 4K OLED screen. Seems to be a pervasive problem with WP in general. I regret using this platform.
If anyone would actually look at that link and tell me WHERE the code is supposed to go it would help. I tried it and it crashed my site, had to re-install the theme. The issue is with the Header images.