00:54:514-00:55:868 I get that this part is simplified since mapping it exactly like the song would create a diff spike in the map and looks something like this https://cdn.discordapp.com/attachments/1116054661301026916/1123576530279342160/chacha.png
But the way it is simplified currently is a little confusing while playing since there's nothing that lands at 00:54:707 so i would recommend simplifying it even more by removing the note at 00:54:707 and instead have the note at 00:54:514 represent the entire sound at 00:54:514-00:54:804.
00:55:578 add a note here since there are sounds here to be represented. This also creates more of a contrast when there's a 1/2 gap excusively after the sound at 00:55:675 where the rest of the sounds stop instead of there being one before and after it, wich doesn't give as much representation to the sound.
It's actually 1/6 if you listen to the sound at 00:55:481 on 25% percent but im guessing you would like it simplified since there are no 1/6 present in the rest of the map
01:52:675: In the other instance of this at 01:46:481, you filled in an improv note.
It would be more consistent to make the usage of improv in these places the same. Whether you have it or not, I would apply the same treatment to both.
Same for 02:32:836-02:32:933, 02:26:739, 02:39:514, 02:45:223-02:45:320.