Help. Monster Kill And Dmg Lag

[alberttt955]

Whenever i attacked a monster it lags.
Like if i use magic missle the hp bar doesnt go down right away but it does the dmg. And after i kill a monster it just keeps on walking at the same spot[i'm a mage and i kill the monster before it gets to me] and it just stays like that for awhile then it finally disappears, give me my exp, and drop the items. And i know its dead becuz i cant use anymore spells on it.

Help?

EDIT: i just tried attacking with just my staff and it didnt lag. So my skills are lagging.