How to improve page speed for Quartz sites.
After these two changes, namely Plugin.ObsidianFlavoredMarkdown({ enableInHtmlEmbed: false, mermaid: false }) in quartz.config.ts and // Component.Graph() in quartz.layout.ts, mobile PageSpeed went from 34 to 91 and desktop from 81 to 100.
Importantly, the pages now feel as fast as I think they should.