Its also an option to stop watching netflix or playing facebook games, stop chatting during a dungeon and just focus on the dungeon itself. If you do all of that you are able to do some dps without any problems except the gear is so bad that the tank dies in an instant or the healer heals baby numbers.
I don't give a rats ass about fflogs in dungeons but i would die of pure boredom if i would just heal or just tank in a dungeon because i'm able to use more than just 3 buttons.