@jamilbk
On your print you're still using 1 thread per gpu.
Change your xmr-stak-amd to 8 threads, 2 threads per gpu. something like this:
"gpu_thread_num" : 8,
"gpu_threads_conf" : [
{ "index" : 0, "intensity" : 2016, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 0, "intensity" : 1800, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 1, "intensity" : 2016, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 1, "intensity" : 1800, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 2, "intensity" : 2016, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 2, "intensity" : 1800, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 3, "intensity" : 2016, "worksize" : 8, "affine_to_cpu" : false },
{ "index" : 3, "intensity" : 1800, "worksize" : 8, "affine_to_cpu" : false },
],
Let us know what this change added to the H/s rate