AMD has released a new Catalyst 15.4 Beta Driver for Windows

This release enables peak driver performance optimization for AMD Radeon™ graphics users in Grand Theft Auto V.

This article provides information on the latest posting of the AMD Catalyst™ Software Suite, AMD Catalyst™ 15.4 Beta.

This particular software suite updates the AMD Catalyst Display Driver and the AMD Catalyst Control Center. This unified driver has been updated, and is designed to provide enhanced performance and reliability.

NOTES

This driver is not intended for use on AMD products running in Apple Boot Camp platforms. Users of these platforms should contact their manufacturer for driver support.
When installing the AMD Catalyst™ Driver for Windows® operating system, the user must be logged on as Administrator, or have Administrator rights to complete the installation of the AMD Catalyst Driver.
The AMD Catalyst 15.4 Beta Software Suite requires Windows 7 Service Pack 1 to be installed.
The AMD Catalyst 15.4 Beta Software Suite requires Microsoft .NET Framework 4.5 to be installed. Microsoft .NET Framework 4.5 is included in all Catalyst packages.
AMD Eyefinity technology is designed to give gamers access to high display resolutions. As pixel count grows, the graphics "horsepower" required to drive the displays at a reasonable frame rate can increase dramatically. Depending on the game and system configuration, users may notice texture corruption and reduced frame rates when running games in multi-monitor Eyefinity modes.

  AMD Catalyst 15.4 Beta Driver for Windows