Can performance optimization cause SEO problems?

Improperly executed optimizations can indeed have SEO disadvantages. Typical risks include: aggressive lazy loading that prevents the Googlebot from seeing content, JavaScript deferring that makes structured data available only after the initial crawl, URL changes through CDN configuration without correct redirects and excessive caching that serves outdated content. With every optimization, we pay attention to SEO implications and test after implementation with Google's own tools to ensure indexability and structured data continue to function correctly.