That's true, I forgot that! There's also this informative comment [1] from the post author (Marcel Weiher) explaining some details: "This doesn't use less RAM

That's true, I forgot that! There's also this informative comment [1] from the post author (Marcel Weiher) explaining some details: "This doesn't use less RAM, it decreases the performance cost of using the more frugal RC." [1] https://news.ycombinator.com/item?id=25208007 https://news.ycombinator.com/item?id=25208007