This is actually the best way to play this highly compressed ROM because emulators handle decompression faster than real PSP hardware.
: While it didn't get an official release, there is a high-quality community homebrew port for hacked Vitas that uses the Android assets. If you'd like, I can help you find: gta san andreas psp rom highly compressed best
: There are independent fan projects attempting to port the game to the PSP, but these are often incomplete (limited to small areas like Ganton) and suffer from low frame rates. This is actually the best way to play
Do not use random "ROM" websites with pop-up ads. Instead, look for community forums like: look for community forums like: