10-Minute HVAC App Performance Audit

I need a fast, focused check of my HVAC mobile-first app. In one short session—no more than ten minutes of hands-on time—I want you to gauge how responsive the current build feels on smartphones, tablets, and traditional desktops or laptops. Loading speed and battery drain are not the priority right now; I strictly care about touch and scroll latency, gesture smoothness, and any UI freezes that appear when navigating between screens or calling backend endpoints.

Please open the live build, interact with every major view, and note where the UI hesitates or stutters. Afterwards, send me a concise written summary highlighting:

• the exact screens or actions that lag
• your best guess at root causes (e.g., blocking JavaScript, heavy images, slow API)
• one or two quick wins I can implement immediately

A short screen recording of the worst trouble spot would be a bonus but not mandatory. I’m after clear, actionable feedback I can apply in the next code commit, so brevity and precision matter more than exhaustive reporting.