You are not just upscaling pixels. By combining the PS4 camera cheat code with 16x anisotropic filtering and a DualSense controller , you have effectively ported a forgotten masterpiece into the modern era.

The hallmark of a modern PES experience is the camera angle. On the PSP version, the default camera is often too close or low. Modders have developed PS4/PS5 Camera Patches

Set in: PPSSPP → Controls → Control Mapping