This is a joke, right? This feels like a very dumb solution. I don’t know much about UTF-8 encoding, but it sounds like Roman characters can be encoded shorter than most or all others because of a shorthand that assumes Roman characters. In that case, why not take that functionality and let a UTF-8 block specify which language makes up most of the text so that you can have that savings almost every time? I don’t see why one would want it to be random.

The end of the article seems to say as much. However, it seems the Vkd3d developers are trying to improve what they can.

There’s a giant ball of extremely hot plasma in the sky and we aren’t supposed to look at it. What is it hiding? Surely if someone managed to look at it long enough, they would see the truth!

Probably just down to less stuff running in the background using up CPU cycles. I can’t imagine it makes a huge difference, but more than nothing.