I wish Go Team would focus on performance rather thann adding new features that nobody asked for. The http stack is barely able to beat NodeJS these days, ffs.
Go is a statically typed, AOT-compiled language, unlike V8. The kind of task that had countless hours of R&D poured into it for decades, much of it public research and open source code.
I'm not sure how GC is relevant here at all given that JS is also a garbage-collected language.
Likewise, the standard library NodeJS http stack will not be as performant as a performance optimized alternative.
That said, if raw performance is your primary concern, neither Go nor NodeJS will be good enough. There's many more factors to consider.