AMD has a fresh batch of Catalyst beta drivers for Radeon owners. The Catalyst 15.10 beta brings DirectX 12 optimizations for Ashes of the Singularity, along with plenty of other fixes.
While the focus of this release is AoTS, Catalyst 15.10 also fixes issues with the Star Wars Battlefront beta on mobile devices with switchable graphics, as well as problems with the Unreal Engine 4 DirectX benchmark. Playback problems with Cyberlink PowerDVD on 3D displays, YouTube 4K videos, and MPEG2 videos have been resolved, too. Finally, AMD believes the crashes in Grand Theft Auto V on certain Radeon 390X cards have been fixed for most users who had the issue.
Beta software has its caveats, of course. Ashes of the Singularity may crash on certain Radeon 300-family cards. Systems with Crossfire graphics card setups connected to FreeSync displays may experience problems, too. Windows 10 systems may also experience a black screen on startup, though AMD says those systems will ultimately arrive at the login screen.