I have tried QoS for Dota2 port on my unifi router with no avail.

Maybe you can try to flash your current router to custom a firmware, like DD wrt or Tomato.

Havent tried that yet, but it might work. (Tomato claims it has advanced QoS features)

Check out this vid bro: http://www.youtube.com/watch?v=qKg1V1vdkMY

This post has been edited by lewkia: Aug 28 2014, 05:54 PM