What's the webapp? Can you file a bug in Bugzilla in Core::Performance with steps to reproduce? Can you take a profile? https://profiler.firefox.com https:/

What's the webapp? Can you file a bug in Bugzilla in Core::Performance with steps to reproduce? Can you take a profile? https://profiler.firefox.com https://profiler.firefox.com You can attach it to the bug, or drop it in #perf on https://chat.mozilla.org https://chat.mozilla.org (Matrix)