This is the most overlooked part of the PS Vita BIOS. The PS Vita uses specific Sony fonts to render text in menus, dialogues, and UI elements.
If your Vita is struggling with high-end emulation (like PS1 with 2x resolution), make sure your CPU is overclocked to 500MHz using a plugin like PSVshell. PS Vita Retroarch 2025 Guide! ps vita bios top