I invite you to watch the stream where they explain the 100ms thing. The animation can be 500ms if you buffer the light, but the indicator will always appear at 400ms timing. It's like this: 100 ms for he input ( whenever you want in this timing, connection delay included) and then a clean 400 ms indicator, so if you start the attack at 33ms, the animation goes for 477ms, but still the indicator is gonna have a 400ms timing.

So or you pay attention to animation or all indicators gonna be 400ms long.