I did some (very limited) testing on my own, in the PS4 version. Please note that my testing was not as extensive as Iria’s, and also that I make no claims of authority or whatever else might be falsely attributed to me, etc, etc, disclaimer, disclaimer, and so on.
What I saw was a significant increase in clear time on my GR100 runs. It’s impossible for me to keep track of whether any mythical secondary procs are happening in all that mess, but I tried my best to keep an eye out for them. Didn’t see any. What I did see was a faster trash-clearing potential once I switched to Rocket Storm or whatever the grenade rune is called (I literally just used it and can’t remember).
My theory at this time is that the additional projectiles from those two runes are the real reason players are clearing faster than the general community thinks they should. It could be that these players are throwing Valla’s Bequest into their builds to try to shift focus to an item which has no bug, in order to hide the benefit of the runes so they won’t get nerfed.
Again, my testing was too limited to be conclusive. Might have just been some lucky runs. In any case, the benefit I saw was nothing close to what’s being claimed.
As always, when conclusive, repeatable proof is shown that there is a game-breaking bug happening here, I will change my opinion. Not before.
EDIT: While we’re on the subject, just to make it perfectly clear, I do not care if Valla’s Bequest gets nerfed. I don’t care if it’s removed from the game altogether. I care if the build gets destroyed because people are bandwagoning on an unproven mythical bug.
We all know that Blizzard is not above collateral damage. We know that from the Star Pact exploit. If the cry-wolf crowd gets their way, there’s nothing to prevent the developers from damaging or destroying the build outright, trying to solve a problem we don’t even know for sure exists.
We need proof. Not hearsay, not belief, not “a friend of a friend who knows a guy”. Proof.