Bit flipping (mutation) helps to find a solution faster, since there are fewer options than in the general range, and if you split it into 20 people, say from 30 to 50 (change one bit option for each), then you can find it even faster, even on the CPU! But for some reason you don’t want to add my idea to Cyclone

Just one moment. If I understand correctly, we don't actually have to search the whole range—just from the last private key onward ?