https://osu.ppy.sh/s/637150Highest difficulty seems very low quality.
1 - Flow feels, and looks pretty random at times, with it being vaugly consistently bad during intense sections. (Making the concept more strict, if there is any would be nice)
2 - 00:55:946 (1,2,3,4,5,6) - Build-ups like this are overspaced both in my opinion, and relative to the rest of the map, with the kiai, a slight level below this section, being mapped with spacing I see from the beginning.
3 - 01:18:299 (1,2,3,4) - Ove of the specific patterns I feel are out of place.
TL;DR - Flow feels random, and spacing is both too high and inconsistent.