In a typical document, F1 is usually the used for body paragraphs. If you need to optimize for speed, focus on F1. Since it renders the majority of the text, ensuring F1 is subsetted correctly (not fully embedded) drastically reduces file size.
To achieve the , you have two options:
Standard Type 1 fonts use single-byte encoding. You can only access 256 characters at a time. This is insufficient for: