AMD has released the Radeon Software Crimson Edition 16.7.3 driver, with improved performance in Rise of the Tomb Raider for Radeon RX 480 owners, as well as various bug fixes.
From AMD:
Radeon Software Crimson Edition is AMD's revolutionary new graphics software that delivers redesigned functionality, supercharged graphics performance, remarkable new features, and innovation that redefines the overall user experience. Every Radeon Software release strives to deliver new features, better performance and stability improvements.
Radeon Software Crimson Edition 16.7.3 Highlights
Performance Improvements:
Rise of the Tomb Raider performance increase up to 10% versus Radeon Software Crimson Edition 16.7.2 on Radeon RX 480 graphics
For a full list of bug fixes and known issues, you can visit AMD's release notes page for 16.7.3. The new driver is available now from this link.