Under character Configuration, targeting. .. you can setup what you want to target only. Also under character configuration I think ui settings you can change battle effects. So I target only mobs when weapon is drawn, removed battles effects from others, show some for party and all for me. Then as some/most mages have a hard time getting off magic before dead, I suggest uSing aoe magic. Also make sure your in a party. In a party as long as u get at least one attack in, as you party members attack you get credit, and most likely get full xp from fate, providing you don't show up late. This helps me a lot as blm and don't really have many issues on ps3