I have a question. I have a lv9 wizard. Problem is that there seem to be delay in whatever I do (lag?) .

I repeatedly cast Arcane Orb but nothing come out. Seconds later suddenly several arcane orb shoot out like machine gun.
I can Frost Nova and try to run away. The screen show I was running away but seconds later it shows I was still standing at the same spot with the frost nova only come out.

I scare if this is hell or inferno mode I will die already. So should I still continue with this wiz?
I don't seem to have this problem with my barb though.