In the world of PSP emulation and ISO files, "highly compressed" usually refers to a process called .
If you are experiencing lag or missing features with a compressed version, community members on Reddit's PSP forum suggest the following: Use Uncompressed ISOs : Whenever possible, use full files instead of to reduce lag. Fast MicroSD Cards midnight club psp highly compressed
These files are usually converted from .ISO (Standard) to .CSO (Compressed ISO) or archived in .RAR/.7Z formats to save space. In the world of PSP emulation and ISO