Using Fear stops enemies from using abilities, which drastically slows down Ult charge. And a Link on Vader can get a whole lot of Ult Charge for the other SEE if he gets a Massacre off.
So maybe make sure you can hit Fears to get the Cooldown increase instead of the stun effect, and Link enemy Vaders. If your Vader gets Linked maybe avoid using MM.
Maybe even just don’t bring DR versus another SEE, as when he can’t hit the leader all he really does is make Fear dispel buffs. Wat would be much better.