You are right of course, perhaps it's something on kernel 3 or 4, but was able to hit 7.5, and 7.6 killed it..
{ "id" : 0, "intensity" : 7.2, "worksize" : 8, "threads" : 1}, is giving 33.0H/s so, not bad at all for this APU.

I'll be looking up some OpenCL api and see if something like low intensity mode could be done by it, or if it needs
done mostly from scratch, or if it's some windows magic.. (i'm used to linux coding, so don't know much of that..)

EDIT:
Seems to be clEnqueueNDRangeKernel and getting it's timing down, thanks to a little nugget of info through google.