Berserk for Dual Wield?

Is stability very important for dw? Will the -25% stability of berserk affect it much? Is it preferable to use berserk for dw? Do you guys use berserk for dw?
And how does stability exactly affect atk? Is it something like : If I have 80% stability and 1000 atk,my atk for damage dealt will be random during battle and the range of atk will be 800 to 1000?

 

If u look at the formulas stability is important

 

Just afect main weapon stab, so sub hand stab is fine also da aspd bonus from berser is glory.

 

The stability reduction only applies to main hand but still, I don't see any problem using berserk. More aspd, more motion and more DOT from auto with a crit buff on top of it.