Browser Support • Re: Pale Moon response speed under miserable ping times

Shutdown of browsers isn't instant. It's an asynchronous process and if you rapid-fire re-open the browser it may actually interrupt the shutdown process and open a new window in the still-running process. That isn't ideal but it's a very complex process to cleanly shut down the browser and commit everything to the open profile. This is also hampered if the JS engine has trouble cleaning up all the cruft from websites that had been opened in the browser. This kind of thing isn't ideal, of course, but will require re-architecturing of some core parts to solve.