I haven't shipped a game on UE4 yet but in profiling our in-development game I've yet to see Unreal's GC emerge as a performance concern. The UE4 GC is purpose

I haven't shipped a game on UE4 yet but in profiling our in-development game I've yet to see Unreal's GC emerge as a performance concern. The UE4 GC is purpose built, simple (mark and sweep), and limited to only certain objects/allocations. The only time I've seen significant GC times/hitches was related to a bug that resulted in thousands of small allocations every second. I would much prefer if Epic dropped the GC - losing tight control over object lifetimes is as bad or worse than any potential performance overhead issues in my experience - but failing that I don't think its inclusion is a serious concern for shipping on consoles.