My analysis of LastPass (correct me if I'm wrong): if your master LastPass password is unique to that site, you are likely safe, but if it's one that you've reused on other sites (check http://haveibeenpwned.com), then you should be very worried.
@ErrataRob 100k/sec global? per one standard CPU? or per some other amount of hardware?
@robryk Roughly per GPU.