I tried building from source while changing threads to 16 as directed by #758 like so:

    # https://github.com/Pylons/waitress/issues/31
    class WaitressServerPoll(ServerAdapter):
        def run(self, handler):
            from waitress import serve
            serve(handler, host=self.host, port=self.port, threads=16, asyncore_use_poll=True)
    run(app, host=server_host, port=server_port, quiet=True, server=WaitressServerPoll)

but it doesn't seem to increase the number of chrome processes, which was 10 at maximum in task manager. the console shows flaresolverr solving challenges one by one in the console.
I'm trying to configure it to work with jackett's 100s timeout, after which the search is aborted.
Using windows 10 btw