My understanding is that the compiler performance issues in Crystal are sort of inherent to the language design and making it much faster will be very hard. I b

My understanding is that the compiler performance issues in Crystal are sort of inherent to the language design and making it much faster will be very hard. I believe it's related to Crystal's type inference -- it has to traverse every code branch to ensure type safety. I believe explicitly typing everything is supposed to help, but I'm not sure by how much (especially if you have dependencies that aren't doing that).