Comment by bcardarella

I hate to say this but usually when I hear that people have problems making Erlang/Elixir fast it comes down to a skill issue. Too often devs explore coming from another language and implement code as they would from that other language in Elixir and then see it's not performant. When we've dug into these issues we usually find misunderstandings on how to properly architect Elixir apps to avoid blocking and making as much use of distribution as possible.