> How much slower is it in comparison to other languages?

It's about the same as most other languages that aren't specifically optimized for C calling. Considerably faster than Python.

Which is funny as everyone on HN loves to extol the virtues of Python being a "C DSL" and never think twice about its overhead, but as soon as the word Go is mentioned its like your computer is going to catch fire if you even try.

Emotion-driven development is a bizarre world.

Yeah, that is why I am asking.