Jouou feat. Hatsune Miku

00:07:362 - could be a double for kick as they're building up here
00:27:612 - this kick actually has loud bass, vocal so you can map it as a quad like 00:19:212 - 00:21:612 -
also 00:22:812 -

00:36:237 (36237|0,36537|3,36762|0,36837|1) -
00:38:487 (38487|3,38562|2) - 1/3 vocal

00:41:262 - 00:41:562 - 00:41:862 - I think these kicks deserve to be doubles as they are building up, also you mapped noticeable amount of doubles before for synth, vocal and kick

00:42:912 - subjective but I think this is a bit weak to do a jumptrill, compare to other doubles which has either snare, kick or vocal, you can remove 00:42:912 (42912|3) - to avoid anchors on col4 while maintaining the tensity of your build up

00:45:162 (45162|2) - 00:46:062 (46062|2) - can move this to col4 to avoid long anchors on col3
00:50:562 (50562|3,50862|2) - can ctrl G to avoid
01:32:596 (92596|2) - can move to col4
01:35:896 (95896|2,95896|3,95971|0,96046|3,96046|1,96046|2,96196|1,96196|0) - can simply mirrow this
01:44:296 (104296|3) - to col4 could help the triple jack play a bit better for me
01:54:196 (114196|0) - can move to col4
02:13:112 (133112|0) - could move to col3

00:52:512 - snares are fading from here so it might a bit confuse to keep the jumptrill going on, I think you can do a Jumpstream instead

01:09:945 - missing kick at 1/6 divisored point

01:15:212 (75212|0) - nitpick but can move to col2 cuz I think this anchor 3 on col1 is unnecessary

01:16:545 (76545|3,76545|2,76678|0) - you might have missed kick sounds

01:16:612 - can put a note here on col 3 to keep the flow same as vocal dump you did at 01:16:278 (76278|0,76278|3,76345|1,76412|2) -

01:45:646 - the kick is fainting here so chordsize can be reduce by a bit
You can try to put triple for clear snares only, while maintaining the anchor

01:51:271 - 01:56:071 - I think double for these is a bit too much as something like 01:54:796 (114796|1,114796|0,114871|0,114871|1) - is only double

01:58:546 - this is way too subtle to do 1/8 roll compare with other instances where you do 1/8 rolls for kicks etc like 01:47:746 - , would just do some 1/4 stream here

02:18:446 - to 02:18:746 - 02:19:346 - Im concerning 1/12 usage here is kinda overmapping, as its pretty acc killing to suddently speed up to 600 bpm roll
I also lost a lot of accuracy in this while still manage to FC it
For the sake of playability, I think it should stay in 1/8 only