Magento 2 Page Builder: Key Performance Bottlenecks and How to Fix Them

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Magento Page Builder, available by default in Adobe Commerce since version 2.3.1, allows merchants to build rich content pages without writing code, but introduces several performance challenges. Each page request triggers a full JSON parsing and rendering pipeline that can become CPU-intensive, especially on pages with 50 or more content blocks. Dynamic elements such as product carousels and customer-group-specific pricing often bypass full-page cache, leading to database load spikes under high traffic. The tool also triggers multiple database queries through repeated observer calls when a page contains several CMS blocks with Page Builder content. Additionally, Page Builder loads a broad set of CSS and JavaScript assets on every page regardless of which elements are actually used, increasing bundle sizes and HTTP overhead.

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