Apple released a new SMC update today for their MacBook Pro Retina notebooks, addressing issues with slow graphics frame rates when playing graphically-dense games, as well as fan issues, sleep issues, and bug fixes for Power Nap.
From the release notes:
About MacBook Pro Retina SMC Update v1.1
This update resolves a rare issue where users may experience slow frame rates when playing graphics-intensive games on the 15-inch MacBook Pro with Retina Display. It also includes bug fixes for Power Nap, wake from sleep and fan control.
The update weighs in at just 504kb, and is available now through Software Update via the Mac App Store on eligible MacBooks, as well as for direct download from Apple’s support website.
