The streams overall are too small spacing wise, buff them a little bit to make the movements more comfortable
Unless u can specify which streams need to buff I don't think it needs any buff imo.
As for the 1/4 hdash streams distance I use 2.8x which is the minimum trigger distance (although it's actually 2.74x but I just floor rounding the number to make it easier).
And 3.6x for stronger downbeat sound. I think it's already fine for the hdash one
And as for the stream spacing itself, since it's just a spreadverdose I don't want to make it too heavy with the movements and it's mostly walkable with few hdashes there and there.
Hope my explanations clear the doubts.