on my
7990 and 7950 (6&3 gb) i geth OpenCL error -4 (0) - cannot create DAG on GPU
r7 370 (2 gb) i geth OpenCL error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions
but i have a 380 (2gb) this works smoothly

why my r7 370&7990&7950 it does not work anymore Claymore?