How disruptive is the GC?

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On Wednesday, 29 July 2015 at 09:25:50 UTC, Snape wrote:
> I'm in the early stages of building a little game with OpenGL 
> (in D) and I just want to know the facts about the GC before I 
> decide to either use it or work around it. Lots of people have 
> said lots of things about it, but some of that information is 
> old, so as of today, what effect does the GC have on the smooth 
> operation of a real-time application? Is it pretty noticeable 
> with any use of the GC or only if you're deallocating large 
> chunks at a time?

http://3d.benjamin-thaut.de/?p=20