Originally Posted by
raiziee
Assuming DPS is the issue.Generally, you go back to basics and see where you can lose some healing without wiping and gain more DPS. Looks and see if certain class's can preform better and abuse anything on the encounter to get more DPS out. Paragon on Neferian comes to mind, when they had to stack Ferals after Sej saw his rips were critting for 1mil+.
Also we don't know if the boss is even mechanically possible and see if there is a hotfix inc. Another example of this is 25hc Twin Consorts. After the nerf, it was killed relatively quickly.
Bare in mind though, all i've been told, Serenity had it as low as 12%. Now whether it's true or false is another thing entirely :P