Ye i have alot of addons running, i disabled some of them, getting an fps increase.
Went in with 3 shammies 1st and 2nd boss with addons on, fps below 10 and dps 12k.
Disabled most of them and got my fps increase 20+fps, dps increase to 25k+.
So ye addons it is,,thanks for that get new components in couple days so hopefully will have all 5 running on 1 pc.

To the guy before,,i was getting 30k+ dps on the dummy with elementals out and heroism.
I dont see how thats hard to achiev, ive been in LFR and seen shaman do more than that.
I was getting that on the PTR.
Heck on trash im usually top dps just from using earthquake and chain lightning, its bosses the lag gets really bad, usually half way through the fight it feels like my pc is going to explode.