Thanks for the answer.
From what I managed to understand, the WIF key search has a very low speed.
Having a public key, it is much faster to search by HEX. I checked the speed of keyhunt BSGS, it will take a long time to search. 2 years.
I could not figure out the "Pollard's Kangaroo" method. Maybe it is faster? Is there any point in figuring this out? If it works slower than BSGS, then the topic can be closed.
I can't find something useful and list of GPUs with speed or to find out which one is much faster, but I found some useful comments from an old post that tested which one is faster.
According to him, BSGS is faster in smaller ranges, so that's why I think the reason why your search speed takes 2 years because it doesn't work on longer ranges. Kangaroo is way better than BSGS for larger ranges.
Here's the post:
Different programs; the best way I can explain it, to keep it simple, one is deterministic and one is probabilistic. IMO, BSGS is fast and better for smaller ranges, but Kangaroo is better in larger ranges. I also think it comes down to, do you have a modern PC with lots of RAM, maybe you go with BSGS; if you have GPUs, maybe you go with Kangaroo or BSGS Cuda. Maybe some mods could be made to build a BSGS server/client that would rival Kangaroo in larger ranges.