Hi,
My destro has a gs 883+-, 2 leggy: wrist and belt, and Arans trinket. I used backdraft, eridication, grimoire of sacrifice, and havok. I did not use soul harvest, because of the 2 mins cd.
Before patch 7.1.5, when I was testing, I did regularly about 900k+- dps (100 mio dmg fight) on the 4 training dummies in the order hall. I know that it does not say much, but I always had values to compare when testing itemcombos. It was always the same situation with the same playstyle. Now, after the patch, I make about 700k.... aaaaand 200k just gone.
What are your experiences on training dummies and trashgrps in mythic +10 or higher?