Menus, filters, and forms can hesitate even on a fast-loading website. Learn how to diagnose button click delays, measure INP, and fix responsiveness issues in Wix, WordPress, and Shopify.

If a website works on Wi-Fi but fails over cellular data, the design is rarely the real problem. Use this practical workflow to isolate DNS, IPv6, CDN, firewall, TLS, third-party and slow-network failures.