How fast is too fast? I deliberately removed the cooldown as I found the 20 tick delay too long; I can add it back in to 10, but I'm not sure what you're referring to.

Shatter cooldown is like 2 in survival

That's actually intentional, do you think it's too powerful?

So,I just tested this,and apply an modifires that decrease cooldown(and I thought that this is so fast because of this modifiers),and then I wanted to test how fast it can be without modifiref and this is the same like with "decrease cooldown" modifiers,too fast,like minigun

This is intentional. I'll experiment to consider the balance, but the responsiveness of the spell especially in combination with even mild lag made it ridiculously painful to use. I may increase the costs to compensate.