I wonder how they're doing it? Do they have a custom kernel? Or maybe they just have some good IO. It doesn't seem to be CPU limited exactly, it's just the b

I wonder how they're doing it? Do they have a custom kernel? Or maybe they just have some good IO. It doesn't seem to be CPU limited exactly, it's just the built in sound device doesn't like it if you turn down the block size too much. USB cards are a bit happier.