From my experience leveling my DPS classes there are two types of tanks. There's the I know how to play the job and do everything mechanically, or the "I want fast ques and I just troll and half ass the job". Perfect example was I ran the 2nd Heavensward dungeon last night forget the name Solm something or other on my BLM. Tank immediately shouts "speed run" barells off with sprint as soon as the gate opened while the WHM was buffing then dies and gives everyone shit for not following.