and your config?
"cpu_threads_conf":
[
{ "cpu_architecture": "ryzen", "affine_to_cpu": 1, "use_cache": true, "multi_hash": 1 },
{ "cpu_architecture": "ryzen", "affine_to_cpu": 3, "use_cache": true, "multi_hash": 1 },
{ "cpu_architecture": "ryzen", "affine_to_cpu": 5, "use_cache": true, "multi_hash": 1 },
{ "cpu_architecture": "ryzen", "affine_to_cpu": 7, "use_cache": true, "multi_hash": 1 },
{ "cpu_architecture": "ryzen", "affine_to_cpu": 9, "use_cache": true, "multi_hash": 1 },
{ "cpu_architecture": "ryzen", "affine_to_cpu": 11, "use_cache": true, "multi_hash": 1 },
{ "cpu_architecture": "ryzen", "affine_to_cpu": 13, "use_cache": true, "multi_hash": 1 },
{ "cpu_architecture": "ryzen", "affine_to_cpu": 15, "use_cache": true, "multi_hash": 1 },
],
"gpu_threads_conf":
[
{ "mode": "GPU", "worksize": 8, "alpha": 64, "beta": 8, "index": 0, "multi_hash": 976 },
{ "mode": "GPU", "worksize": 8, "alpha": 64, "beta": 8, "index": 0, "multi_hash": 976 },
{ "mode": "GPU", "worksize": 8, "alpha": 64, "beta": 8, "index": 1, "multi_hash": 1008 },
{ "mode": "GPU", "worksize": 8, "alpha": 64, "beta": 8, "index": 1, "multi_hash": 1008 },
]
BTW: after a longer use, the hashrate of my 4 GB (GPU 0) remains stable around 1010 h/s but the 8 GB (GPU 1)'s one ends up to 961 h/s.
But I didn't try to optimize the settings yet with the 0.33b4.