I'm working on[http://getseosolution.com/ optimizing a web application] optimizing a web application and noticing some performance lags (e.g., slow page load and laggy interactions) specifically in Firefox. I’ve used Chrome DevTools for performance profiling before, but I’m not as familiar with Firefox’s tools. I see there's a Performance tab, but I’m not sure how to interpret the flame chart, event markers, or how to pinpoint what's causing the slowness. Can someone guide me through the process of [http://getseosolution.com/ debugging performance issues] debugging performance issues in Firefox Developer Tools? Specifically: How to profile JavaScript execution? How to identify slow rendering or layout shifts? Any tips for using the memory and network panels effectively? I’m using Firefox version XX.X on [OS], and this is a React-based app. Any tips, resources, or walkthroughs would be appreciated!