Stellite: right i release the GPU version now.

cpu perf: i did a lot of tests to compare 2 separate JCE instances against mixed mining, and found a way to slightly improve the efficiency, but my result were inconsistent since the cpu perf is very sensible to any external usage. So try the new version, with your 2 cpu threads plus GPUs and things should be like +1% better pool side. I hope.
I don't count it as a bug, but yes it lacked some optimizations.

0.33b16 GPU