Arbiter of Ash inconsistent timings

Hello, the arbiter of ash fight is either bugged or slows inflicted by the player make the timings of the beam/seed combo unsolvable. I don't know the reaason for this, but this is impossible to react to.

https://www.youtube.com/watch?v=6_rOfAjhu4g

example of a run where I had basically no time between the beam and circle going off

Here's an example of the mechanic I found on YT where it seems "proper" - tight timing yet perfectly doable with a decent reaction

https://youtu.be/xkqT8u7NBAg?si=fKrseJCDhPwO5aok&t=81