This is the last time i'm putting this up, the post keeps on being deleted. this works for me on 7950 max settings for NBA2K16
if it doesn't work for you could be your cpu.
checkout my config file below
WIDTH = 1920
HEIGHT = 1080
REFRESHRATE = 59.9
BUFFERCOUNT = 3
VSYNC = 1
DYNAMIC_VSYNC = 0
LETTERBOX = 0
UI_ASPECT = 1
CURSOR_IDLE_TIME = 1
WINDOWMODE = 1
WINDOW_X = -2147483648
WINDOW_Y = -2147483648
MSAA = 4
MSAAQUALITY = 0
SSAA = 0
REFLECTIONS = 1
MONITOR = 0
MAXANISOTROPY = 16
TEXTURELOD = 0
PLAYERLOD = 0
MEDIAPEOPLELOD = 0
CROWDLOD = 0
SHADERLOD = 1
EFFECTLOD = 0
COLOR_CORRECTION = 1
DEPTH_OF_FIELD = 1
SSAO = 1
BLOOM = 1
VOLUMETRIC_EFFECTS = 1
VIBRATION = 1.0
ABOVE_NORMAL_PRIORITY = 1
D3D_INTERNAL_THREADING_OPTIMIZATIONS = 1
FAST_TEXTURE_FORMAT_CONVERSION = 0
DYNAMIC_ENVIRONMENT_MAP = 1
JIT_SHADER_CREATE = 0
ADAPTER = 0
ADAPTER_DESCRIPTION = AMD Radeon HD 7900 Series
ADAPTER_DEDICATED_VIDEO_MEMORY = 3,202,531,328
ADAPTER_SHARED_SYSTEM_MEMORY = 8,574,994,432
ADAPTER_VENDOR_ID = 0x1002
ADAPTER_DEVICE_ID = 0x679a
ADAPTER_SUBSYSTEM_ID = 0x32201682