Disc priest haste (GCD) optimal value in 2v2

Hey Voidweavers!

What is the optimal haste (or GCD, since they define each other) value in 2s? I am currently playing with ~29% in PvP, which makes 1.16 GCD (if i stay with 1.16 GCD, I shall go for 28.76% haste later as it’s the lowest value allowing 1.16 GCD). It feels good, but maybe small adjustments in haste->versa or vice versa could increase my performance.

So I was wondering if someone made calculations or simulations to determine the optimal value, i.e. the one maximizing our dps.

Thanks mates