⭐ Merited by escope (1)
Many thanks for your report Dave 
Some news:
Wildcard search is between 4 and 5 times slower than classic search for known prefixes. I reach ~40MK/s with my 1050 Ti and ~4MK/s with my i7-4770.
It is due to the fact that I have to compute full address each time and it requires 2 SHA for the checksum and a base58 encoding. For the CPU release, I implemented SSE checksum and I will try to implement SSE Base58 encoding using Barret's reduction (for computing div and mod 58).
Some news:
Wildcard search is between 4 and 5 times slower than classic search for known prefixes. I reach ~40MK/s with my 1050 Ti and ~4MK/s with my i7-4770.
It is due to the fact that I have to compute full address each time and it requires 2 SHA for the checksum and a base58 encoding. For the CPU release, I implemented SSE checksum and I will try to implement SSE Base58 encoding using Barret's reduction (for computing div and mod 58).