I haven't even looked at the map and I already know that you have at least one buzz slider in there that is just the right length and oriented just right.
Exgon has a map in one of his loved sets that demonstrates just how broken a long buzz slider can be when converted into ctb https://osu.ppy.sh/beatmapsets/217667#fruits/1054659
Edit: I knew it. There's 4 buzz sliders in here which absolutely break the difficulty rating calculation. The game thinks you have to move back and forth to hit each of these, but you actually only have to land the catcher between them https://osu.ppy.sh/ss/14498631/4194
I made a copy of the map and removed the 4 buzz sliders at 00:46:032 and 01:23:679 and the difficulty dropped down to 6.01* with HR on.
youve broke the system