There were several retargets and this bot still generates at this insane speed. Seems that additional work required to generate maps doesn't affect him.
I'm looking into potential bugs. There probably is one.
I think he may have added more hardware, and/or changed enumeration strategy.
So as we can see the adding some proof-of-work to generation map isn't usefull?? Is there some method to not to do that proof-of-work? Is now some "proof-of-work to generate map" exist?