> I started to hit real performance issues again What would help is to activate the Gecko profiler[1] when the performance issues occur. The cause of these per

> I started to hit real performance issues again What would help is to activate the Gecko profiler[1] when the performance issues occur. The cause of these performance issues might not be in Firefox itself, and the Gecko profiler would allow to find out where is the issue. [1] https://perf-html.io/ https://perf-html.io/