Input delay on heavy release

Here are some videos I captured. I think they are the more telling ones.
Flail : notice how holding down LMB longer doesn’t result in the permanent spin, but releasing it during the initial windup does. Same exact behaviour on Bretsword by the way.

Here are the inconsistent ones :
Fire sword expectations : notice how the attack goes as soon as I release LMB :

And here is a demonstration of it being inconsistent. Sometimes it’s instant, often it’s delayed :

And finally I think the most telling one regarding chaining attacks : the spear. I’m genuinely trying to chain L1 > H2 > L1 during the whole clip.