Captcha Breaker sdk brute force load

Hi guys! 

I'm bruteforsing a big amount of data with sdk, but i see that CPU load in no more than 13% and Ram usage is only 200mb, why CB uses only this small amount? how to increase speed of bruteforcing? Server - 32gb of RAm, 16 3ghz processors

You simply can't as some image filters need the main thread, meaning it is single thread based and until I change the remaining image filters code, it has to stay like that sorry.