The opposite, be very deliberate until you are sure of each pull. Some mechanics can be unforgiving in CMs. You don't have to medal to get the daily quest reward, just have to finish. Youwill want/needCC. Generally speaking the trash is worse than the bosses, some of my fastest boss kills were done in CMs, for example 3rd boss in skyreach (ruarkhan or whatever, the giant bird), we don't kill adds, just kite them while destroying the boss.