On Mac M1, the `x86_64` binary of `gbt` works through compatibility wrapping, which makes it noticeably slower. Here's a timing comparison: - upstream version (obtained through `brew install`) ``` $ time gbt &>/dev/null real 0m0.174s user 0m0.081s sys 0m0.084s ``` - Compiled native `arm64` version: ``` $ time ./gbt &>/dev/null real 0m0.094s user 0m0.052s sys 0m0.041s ``` The (almost) 100ms increase creates a noticeable and annoying latency.