Stage is currently in Beta, performance may be an issue.
Stage sets itself out to be different than the majority of Actor Models in Rust by putting an emphasis on ergonomics and easy development iteration. You shouldn't be slowed by the intrinsics of a framework. Stage makes compromises in how "Rusty" it feels in order to simplify design.
We're glad to have contributions! Please make sure to open an issue before hand, so we can coordinate.