Fps drops when moving mouse (Isboxer)

[maveone]

I am trying to multibox on this server using isboxer (the legit version) but when i move my mouse around my screen (not turning my character, just moving the mouse around) it causes massive fps drops like my wows are freezing. This happens even with 2 accounts running. I think this is a problem with Isboxer as i can run 15 Perfectly fine with HotKeyNet. If anyone knows what could be causing this please let me know.

[gutripperr]

When I changed the setting in Game Menu > Video > Resolution > Hardware Cursor it worked fine.