Thank you
You might be right about the ray thing; I only briefly tested that you can dodge them on reaction(well that I can react to them & I'm pretty slow too I feel), but to dodge them I really had to be focusing on the bottom of the screen and watching for the shadow(and I also might have already had the character moving before hand to skip the acceleration part of the movement).
I kind of purposely made a lot of things distract focus(especially on the big sword and the ray); like I remember purposely tuning the rays spawn timing to shock me while fighting other rays or being distracted looking elsewhere on the screen etc. so that stands out to me as something that might be causing it(though I'm sure you know if that applies or not & yes it might just be impossible if you're not already moving if it doesn't). The sword guy has a similar concept with the fact he moves(drawing you eye with aiming) and he kind of locks you into dodging(drawing your eye into the characters body for dodging)
With the sword I also tuned a lot of the timing when staying at nearer to the bottom of the screen; if it's not that(and you weren't at the top or in the middle or something) then I guess it might also be me skipping the acceleration again but I'm not sure