I don't think the dev anticipated that the nfactor would be scaling back gpu hashing power so fast we already droped 50%-60% and we're not even close to block 300k. I thought it was going to progressively slow down till we hit block 300k but are hashing power is dropping exponentially fast considering what block we're on
Well the code can be seen here:
https://github.com/microcoinsource/microcoin/blob/master/src/main.cpp in the function GetNfactor() but once it gets to bitwise shifting I no longer have any idea what's going on so I can't really tell you when it'll reach the maximum nFactor, but it doesn't seem to have anything to do with any particular block.
Like I said though, I can't really follow through the logic of that function, so if anyone can, please provide some sort of idea of when it'll reach maximum nFactor.