I would not know how. I reported what I read in the cracker's thread.
And, like I said, the sum of the Optiminer returns (miner net plus dev fee) is still reportedly less than Claymore's Zcash miner net. He charges a clearly stated 2.5% fee. --scryptr
Don't believe everything you read, test for yourself when possible and make your own conclusions. Reporting things that you have not tested yourself leads to the spreading of misinformation and adds to the confusion.
The dev fee at the launch of the miner was about 15% and during that time it was FAR faster than any alternative on Windows or Linux. This was documented on the same day that the software was released, before you make these accusations and spread this information please take the time to do your own research and at least review the original thread on the ZCash forum where all of this was discussed and documented.
Currently, the sum of the miner output, including the dev fee is above Claymore's output when I test Optiminer on Linux.
On RX480 8GB, I receive ~192H/s, add to that the 10% fee and you are at ~211H/s.
With the same cards using Claymore on Windows, it generates ~200H/s