Official runtime yes. For having worked with the source, I can safely say it has been written to not stress the GC too much.
But it's a very modular engine, you can change parts of it to better accommodate your needs, I'm currently finishing implementing my "no-allocation" ECS library and will 100% try to integrate it into my fork.
But it's a very modular engine, you can change parts of it to better accommodate your needs, I'm currently finishing implementing my "no-allocation" ECS library and will 100% try to integrate it into my fork.