: This format "scrubs" away the filler data. For a game like WWE '12, this can significantly reduce the file size—often by 1–2 GB—without losing actual game content.
: If you have an uncompressed ISO, you can right-click it in Dolphin and select "Convert File" to RVZ. This modern format can compress Wii games by up to 90% while remaining playable directly in the emulator. : This format "scrubs" away the filler data
WWE '12 Wii ISO for Dolphin Emulator: Setup and Performance Guide : This format "scrubs" away the filler data