OpenCL error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
GPU 0, OpenCL error -38 - cannot write buffer for DAG

6970 2gb

with the above
setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100