: The build included 12 major security patches for Bluetooth, Kernel, and WebKit to prevent data exfiltration and arbitrary code execution.
: It significantly improved automatic graphics switching for the 15-inch MacBook Pro (October 2016).
In 2017, this was an . While initial Sierra versions were criticized for being "slow" on older hardware like the 2010 MacBook Pro, Build 16D32 provided the stability needed for professional work, especially for those using the then-new USB-C/Thunderbolt 3 architecture. macOS in Review: A Look at the First Four Months of Sierra macOS Sierra 10.12.3 Build 16D32 Intel USB 2017
: Reviewers noted that Intel’s then-new Kaby Lake processors (used in the 2017 MacBook refreshes shortly after this build) saw massive jumps in efficiency, with battery life for video viewing increasing by up to 2 hours over 2016 models.
: A known issue in Sierra involves the "Double-click speed" setting in Accessibility; if set to "Slow," it can cause several-second delays in the Finder when creating or deleting folders. Key Feature Refinements : The build included 12 major security patches
: It resolved critical graphics issues that caused glitches while encoding projects in Adobe Premiere Pro on Touch Bar-equipped models.
Released on January 23, 2017, was a critical stability update primarily focused on resolving major graphics and compatibility issues that plagued the early 2016 MacBook Pro lineup. While it didn't introduce flashy new features, it refined the foundation of Sierra—which brought Siri to the Mac and integrated the Universal Clipboard—making it a vital "quality-of-life" patch for Intel-based hardware. Performance and Graphics While initial Sierra versions were criticized for being
: Users reported that it helped mitigate "checkerboard" patterns and screen tearing that some had speculated were hardware failures. USB and Intel Compatibility