well i am sitting on a constant 3,4-4,1k MS (SA,only VV + RR and my old 75- gear,the 3rd atma was a resistance atma, yeah i like safe fight over max dmg output)
on duo or trio i like to equip mandau + rapidus sax, so i can stick sa or ta for mercy stroke and have enough attack speed to do evisceration with MS aftermath (yeah it really loves the crit rate+)
did dynamis xarcabard a couple days ago and i was sitting on a constant 1,3-1,5k sa't MS (equiped th5 all time)
th 5 all time: i recognized that if i get th6 on the initial sa attack. the next proc will be 6 again after removing th5 hands.

Edit: for atma sitting at str+200 is anyway enough to have it capped.str+250 made no difference