anyone checked hardware errors on these various voltage settings?  Add up the HW[] values in the log output.  I suspect they will be rather high on the dramatic voltage changes.  Hash rate is raw and will include all the errors

I know if I use a -2 with the normal undervolt method, that I have one miner that will generate 12.9Th, but it's also generating almost 10% errors.  If I move that to -1, it will got to 13.1Th and the error rate will drop the 2%