SS3 LITERALLY takes 20 minutes to get to title screen. I thought it was freezing at first but the brown loading bar kept moving so I let it load. Then it goes to an all black screen with a loading icon in the the lower let corner. 20 minutes later it's at the main menu screen and I'm getting about 1 frame every 2-3 seconds. I've tried Catalyst 13.1, 13.4, and now 13.6 Beta with no improvements. I know I have to be missing something. Game runs fine under Windows 7 with moderate to high settings.
Linux Mint 15 RC (Cinnamon)
Lenovo Ideapad Y560P (Display modded to 1080P)
AMD Mobility Radeon HD6570M
Intel Core i7-2630QM
16 GB DDR3 1600 Mhz
Samsung 830 256 GB SSD
rebel@rebel-Rev-1-0 ~ $ fglrxinfo
display: :0 screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 6570M/5700 Series
OpenGL version string: 4.2.12337 Compatibility Profile Context 13.101