This occurs because the PSP or emulator CPU is working harder to decompress audio on the fly. In PPSSPP, enable Sound Speedhack under the Audio settings.
: Utilizing level 9 compression via conversion tools shrinks the footprint by up to 50%, making it highly portable. What Does the "UPD" (Updated) Version Fix?
To play this game on modern hardware, you will need the PPSSPP emulator. Android 5.0 or higher RAM: 2 GB minimum (4 GB recommended) Processor: Quad-core 1.5 GHz PC / Windows OS: Windows 7/8/10/11 RAM: 4 GB minimum Graphics: OpenGL 2.0 or DirectX 9 supported GPU Step-by-Step Installation Guide
I can provide specific or custom configuration codes to fix your problem. Share public link
Locate your downloaded highly compressed Silent Hill file (usually in your Download folder). Open or 7-Zip and navigate to the file.