What domain are you working in? It's hard to be able to say anything specific that might help you if you can't explain a little more clearly what you're working

What domain are you working in? It's hard to be able to say anything specific that might help you if you can't explain a little more clearly what you're working on. I will say there are a larger and larger number of no-GC libraries. Phobos is getting an overhaul which is going to seriously reduce the amount that the GC is used. It is probably also worth reflecting for a moment why the GC is causing problems for you. If you're doing something where you need some hard-ish realtime guarantee, bear in mind that the GC only collects when you allocate. It's also possible to roll your own D runtime. I believe people have done things like replace the GC with allocators. The interface to the GC is not unduly complicated. It may be possible to come up with a creative solution to your problem.