May be I miss something, but sometimes key fragment drop rate seems to be 30-50%. For example on character on server X. But sometimes I kill 30 mobs and get zero drops. For example when I switch to other character on server Y. Sometimes I kill 30 mobs in a row without any key drops, but then they start to drop from every mob. You know. Elites aren't easy to kill solely. They're supposed to be challenging. Killing them for no reward is pointless waste of time. How can you explain it? When such RNG manipulations happen, I really feel that devs are cheating me.