Because you sought a "highly compressed" version, you likely have a low-spec PC or limited storage.
If you want a smaller file size without resorting to shady downloads, here are the best legitimate paths: dbz budokai 3 highly compressed
Use CSO Compression:
Tools like CISO or MaxCSO can convert your PS2 ISO into a .CSO (Compressed ISO). This format is readable by many emulators and can shrink Budokai 3 to under 1 GB without deleting content. Because you sought a "highly compressed" version, you
A highly compressed version of Budokai 3 uses advanced archiving algorithms (like 7-Zip or WinRAR) or specialized repacking tools to reduce the game’s file size dramatically. While the original game is just over 3 GB, a highly compressed repack can shrink it down to anywhere between 200 MB and 600 MB. If you want a smaller file size without