It's great that you're looking into PS3 emulation! It’s a exciting way to revisit classic games, though I should mention that Dubo PS3 Emulator
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The term "Dubo" is not associated with any legitimate open-source emulator project (like AetherSX2 for PS2 or DuckStation). Searching GitHub, Reddit, or the official RPCS3 forums yields zero results for a "Dubo" development team. It's great that you're looking into PS3 emulation