FPS drops in combat

Hey.

So I've just recently started and I've noticed something. I seem to be getting a massive FPS drop when entering combat for some reason. Outside of combat I'm at constant 60 FPS, but the second I enter combat, it drops to around 25 or so.
Any idea what could be causing this?

Did you recently changed client to wod models or legion models or something? This may cause fps drops in combat, as do addons that operate during combat(skada,dbm, several pvp addons)

Either change to normal client or remove all addons such as recount/skada/dbm/ handy notes and such.

Huh. Yea, I'm playing with the WoD model client and I do indeed have DBM and Recount. Shame those two don't work together.