I tested it with all the weapons I was able to grab that being:
Magic Staff, Mace, Mace 2, Katana, Sword, Knives, Bow/Arrows and Boomerang.
As seen, only the arrows seem to twitch allover the place making them hard to use.
That is super strange, it seems to use the same prediction stuff as the rest but that's still happening.
I'm not sure if I'm going to be able to fix that before the demo goes out.
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Thanks so much for helping me test guys, the game didn't crash and most of the problems we had yesterday seemed to be fixed.