90% Reduction in performance when adding a single character

[Snoopy]

Ah ok got it, thanks. Good to know I was not doing something stupid. I introduced a -2 2021 which got the speed back but also obviously exploded the problem set.

Any other way to work around this?

without knowing the outcome, what about trying to use a hybridattack? wordlist + mask?

dont know how this affect the 4byte bias mentioned by royce, but think its worth a try

so your input wordlist would be just a single line with 4 spaces, thenn add the rest of the mask

or you could generate lets say a wordlist with all possiblities of first 8 bytes given your hexinput, didnt do the math right now, if its to many combinations forget that