Boost Shopify Product Page Speed 90+

My product page currently hits only 68 on Google PageSpeed Insights and shows a red flag for Largest Contentful Paint. I need that score brought up to 90 + without sacrificing any of the several apps already running on the store. I need done within the next 6 hours . Here’s what I expect: • A careful audit of theme code, liquid snippets, and assets to identify anything that blocks first paint. • Smart optimisation—code splitting, critical-CSS inlining, lazy-loading for below-the-fold content, server-level compression, and efficient preloading—so the apps keep working untouched. • No removal or replacement of existing apps; instead, you’ll work around them or refactor their injected scripts for minimal impact. • Concrete proof of progress: Lighthouse or PageSpeed before-and-after reports plus a brief summary of the changes you made so I can maintain them going forward. If you’re confident you can deliver a consistent 90 + score while preserving full app functionality, let’s get started.