Anarchic (and maybe other) Godsword Special Delay?

[Razzation]

Whenever I try to freeze someone with my Anarchic Godsword, there seems to be a huge chance for it to just not go off, or to be delayed for seconds before actually freezing them. Was this intentional, or is it supposed to be instant (like it sometimes is) all the time, and it's just broken. I know I'm not the first to find this, but I didn't see any other threads based upon it. It just annoys me so much when the freeze could save my life, but it doesn't proc.