Fast booting Chromium-only Linux

I have a controller that offers GUI/Cockpit View over HTTP as a single-page application (SPA). My project is now to have a Cockpit computer that displays this "website" (SPA) and nothing more. **I need a Linux which boots super fast, the ideal would be 10-15 seconds, into Chromium.** ... because nobody wants to wait half a minute to see engine data (like the HUD display in modern cars). There need to be nothing more on this Linux system except - Xorg with Intel drivers - Chromium Runs on Intel Atom x5-Z8350 x64. EFI takes 1 second. --- I already tried a bare Debian, but I could only strip it down to 24 seconds (power-on to page loaded) Can someone point me in the right direction? Is there maybe a distribution that fits my use case exactly? I don't know the search terms for such a thing. Systemd-analyze plot: I've made a video of the boot process. The system is booted as soon as the test site shows yellow "three.js" text. https://www.youtube.com/watch?v=2_XqE-hTYcg