Following NVIDIA's earlier release of Watch Dogs 2-optimized drivers, AMD has released its own.
Apart from improving that game experience, these drivers -- numbered 16.11.5 -- include a CrossFire profile for Dishonored 2 in DirectX 11, and fix flickering in the Division and Battlefield 1 when using CrossFire.
Hit the source for the download and/or known issues list. Otherwise, boot Radeon Settings and grab the drivers. If you want to remain on the cautious side, use AMD Clean Uninstall Utility before installing 16.11.5 to ensure no issues arise from overwriting your old drivers.