You'll be happy to know I implemented the n-body benchmarks game in zig 0.6.0 and it absolutely thrashed the rust version. Submitted it, but they don't take PLs not on the board currently.
https://gist.github.com/ityonemo/f34e0d3b4891f481863980a3142...
Note it could also be platform dependent. I'll give it a whirl on my own (new) machine.