The Batting Cages

[Ashe]

If you do this, for the love of God, micromanage your guy closer to the target than needed. If your character has to move to use Ignite, it cancels.

This. If you have told your character to ult from outside its range, he'll move to the absolute edge of ult range, then when you try to ignite, you'll take a step and cancel your ult, since its a shorter range.

As far as your silence goes, you get double damage if they are in the middle. You see those orbs that start at both sides and move to the middle? That's where the damage is. So try to catch them in the dead center if possible for max effect.