This is the standard for "high compression" on PSP. The CSO format uses the DEFLATE algorithm (similar to ZIP but optimized for streaming game data).
May have cutscenes or high-quality audio stripped to save space Includes all original assets Potential for "lag" or stuttering in data-heavy racers Optimal performance
: The handling was revamped to better suit the PSP’s analog nub and D-pad. 2. Mechanics of "Highly Compressed" Files (CSO)