Press Select + Triangle in-game. This opens the RetroArch Quick Menu. In version 121, this menu now includes a "Performance Monitor" overlay. Turn this on to see which core setting is bottlenecking your game.
For the first time, you can replace the default boot screen with a custom PNG. Make it look like a CRT turning on, a Game Boy startup sequence, or just your name in pixel art. retroboot 121 new
Go to Main Menu -> RetroBoot Options -> System Performance. You can now set the PSC CPU clock to 1.3GHz or 1.5GHz. Warning: 1.5GHz requires a heatsink mod, but 1.3GHz is safe for 99% of consoles. Press Select + Triangle in-game
Added a new game via USB or network share? RetroBoot now monitors your ROM folders in real time. Drop a file, and it appears in the UI instantly — no manual scan or restart needed. Turn this on to see which core setting
The “121” in the version might as well stand for 1.21 jigowatts — because booting from launch to game selection now averages 1.2 seconds on modern hardware. We’ve stripped unnecessary driver reinitialization and pre-cached your playlist artwork.