About Bullet King drop chance

There is no. Fucking. Way. The drop chance for Bullet King is 5% on challenging. I and a ton of other people, (I know I'm not the only one) have been farming for it since it was fixed and have gotten jack shit. I've done around 90 runs of Wall Street and have only even seen it dropped for my team mates, which is always been 4 people, 7 or 8 times, and I as well as a ton of others havent gotten it in some cases in over 100 runs of this shit. I've run into the same people days apart farming for this fucking thing. Idk I just feel like I'm wasting my time, I know exotics aren't supposed to be easy to get but this is getting ridiculous. Anyone else experiencing the same thing?