macOS 27 Golden Gate fixes HDR on third-party displays with scaled resolutions

Apple's macOS 27 Golden Gate resolves a long-standing limitation: HDR can now be enabled alongside scaled resolutions like 2560x1440 on third-party HDR monitors. On macOS 26 Tahoe users had to choose between HDR and their preferred resolution. The feature appears to require newer hardware, as it did not work on an M1 Max MacBook Pro.

• On macOS 26 Tahoe, HDR was disabled when a scaled resolution was selected
• macOS 27 allows HDR and scaled resolutions simultaneously with no third-party software
• Works on M4 MacBook Pro but not on M1 Max
• macOS 27 also brings broader native HDR support across the OS