And yet the GC pauses are noticable and annoying. It's not game-breaking because Minecraft is just that good, but I doubt it'd work well for other games.
I brought up Minecraft as proof that gamers are willing to tolerate the occasional bit of lag. And, honestly, I haven't played an AAA game that doesn't lag out and drop frames from time to time.
To return to the topic at hand: 60fps is 16ms per frame. The proposed GC would achieve sub-10ms pauses. So, worst case you might drop the odd frame. To assume that Go is unsuitable for games because of garbage collection is to ignore reality.
