Historically, "highly compressed" meant a where the background music and FMV (full-motion video) cutscenes were deleted to save space. While these files were small (often under 50MB), they frequently suffered from:
Some games were hardcoded to seek data that no longer existed. psx highly compressed roms fixed
If you are looking for the best balance between size and stability, focus on these three formats: How to Play PS1 Games on PC - DuckStation Tutorial (2025) psx highly compressed roms fixed