I have been farming as much greater rift boss to get the gems / legendary. So I was waiting until below 4 minutes to make sure I get the next level key.
I was running with my friends and some of them were saying : "I don't know what happened but I was seeing much more legendary from the Greater rift boss before".
I was just wondering if it was just sheer luck that they don't get much or if once you complete X number of greater rifts the drop rates lower or something. Or maybe the completion time increases drop rate. I don't know, was there any blue post on this?