Yes the DD complained a lot about lag, I was tank so not much of an issue outside of hitting synergies was hard.Oh yes, the blood balls were defenitely very hard to even use!
Also the lag caused all the mobs to walk in random directions. It was insanely hard to collect all the mobs in one place. Wasn't really a problem with the easy ones but annoying when priority adds did their aoe directed at the whole group...