Vayne's Q; Tumble, is a short CD, short distance dash, that increases her damage for her next shot. How long is the animation, in seconds?
The sub-question is, will Vayne hit a point when tumbling lowers your DPS, because of the tumble animation taking time? i.e. Could she have too high an attack speed, and you deal more damage by just continuing to shoot and not bother with Tumble?
Does using tumble always no matter the attackspeed increase your damage?