(R2 F' R B') // EO (4)
(U) // 4c4e
(L' U2 F2 D2 U2 L' D) // 12 4b2 4e
(U2 L2 B2 L D2 F2 R) // HTR (19)
(U2 L2 B2 D2) // Linear 23 lol

Backup solution:
(L' D'), F' L' B2 R' F' R B' R' // 10 4b2 4e
D2 B D2 L2 U2 L2 F' // HTR (17)
D2 F2 D2 F2 U2 R2 U2 L2 // 25
Theres also this 4 qt HTR that gives 24 to slice:
(L' D), F' L' B2 R' F' R B' R' 
F (L2 D2 B' D2 B D2 B)
(D2 L2 B2 U2 F2 U2)
I missed this one but I'm too lazy to check if it gives +0 or not (I'm assuming it does, seeing as it's 4 qt)

Other:
F B' R L' B, U' R' U' D' L' D L' // 12 2c3 2e
F (D L2 B'), (R L2 F2 L2 U L' U) // 10+1 ext 4b2 2e
(U2 L' D), F' L (F' D2 R2 F' R2 F L)
F B R L' B, U' R D' U2 L' D L // 12 2c5
(B' R F), (D U' L) D' R' U R // 10 4b5 2e

12+8 hits hard
PB2!!
(B' D' R) // EO (3)
B D2 F' // 3c2e
U' D' L2 B U B // 12 4a1 4e
U^' // wtf
L2 D2 B2 L2 [D2] B2 // Slice (19) whaaaa
^=w
D2=Dw' D'
+1/20 yay!

L' F2 R' // EO (3)
(U' B) // 3c2e (5)
U2 F U F' // 9 2c3 2e
(F2 D' R2 D^' R2 D^) // HTR (15)
(B2 R2 F2 R2 D2) // Floppy (20)
(R2 L2) // Slice (22)
^=w
+0/22
This DR gives a 20, the htr used to get to it is a little weird though, so I don't think I would've found it
I honestly should've found this within an hour (I'm submitting this as unlimited), but since this eo gave 4c4e anyway I didn't think about further reducing it :/

Other:
(U2 B'), R (D' F2 U2 D R) // 8 4c3 2e
I'm pretty sure I found this one but didn't write it down for some reason
(U2 B'), R (U' R2 U' R2 U2 F2 U2 R) // 11 4c3 2e
D' B2 L2 F, U L (D F2 L' U' L) // 11 4c4 2e
F D' R2 F, L U B2 D R2 D' R // 11 2c4 4e
L' F2 R, B2 U' B2 U' F2 D' F // 10 0c4 6e
L F2 R, U' F2 D2 F2 U' F2 D F // 11 0c4 6e
L F2 R, U' F2 D' B2 D B2 D' F // 11 0c4 6e
U2 R' D2 L, F2 D' F2 B2 U' B // 10 4a1 0e bruh
U2 L' F2 R, L2 F2 D' F2 B2 U' B // 11 4a1 2e

L' R B' R // EO (4)
(D U B') // 3c2e (7)
D B2 D F' U F' // 13 2c3 2e
(D F2 D^' L2 D^') // HTR (18)
(F2 L2 U^2 L2 D2 ) // Floppy (23)
(F2 R2 L2) // Slice (26)
^=w
+0

R' F' D // EO (3)
(L B) // 4c4e RZP (5)
U2 L2 F2 L B' // 10 2c4 6e
R (R U2 R F2 R) // Danggggg 6 move htr on 2c4 6e???
(D2 L2 F2 Lw2 F2 U2 Lw2 D2) // 24
Typed this out just in time, not bad

FIRST SUB 21 WTF WTF WTF (Found & typed out with 15 mins to spare)

L U2 D B // EO (4)
F2 L F2 D L2 D // 4a1 2e (10)
Here's where I big brained and realized that I can reduce to 4b2 2e
(L^' F2 B2 R D2 R^') // HTR (16)
(B2 D2 L2) // SLICE 19 HUH
^=w
+0/19!!!!!!!
I wonder how many other ppl found this or will find this

F R D B // EO (4)
L $ // 4c4e (5)
(F2 U' F2 B2 L2 U L2 U R') // 14 4b2 2e
(L2 F2 U R2 D' R2 F2) // "wrong slice" (21)
$=L' R D2 R' L B2
+4/25

So I submitted this as a regular attempt but then changed to unlimited because I thought that I found a 24 (but it was really just another 25)

D R' F' L U' // EO (5)
(R) // 4c4e (6)
(B' D2 B2 R2 L2 F B' R2 F R') // 16 4a1 4e
(L2 B^ D2 F^2 $ R2 D2 L2) // +7 to slice 💀💀 
$=(S)
^=w
+1/24
16+8 hits so hard

This scram sucks
(B D F' D' R') // EO (5)
F2 U2 F // 3c2e RZP (8)
D2 B' U' B // 12 4c3 4e
D' (F2 B2 U2 F2 U L2 U) // HTR (20)
(L2 F2 R2 B2 R2 D2 B2 R2) // Finish (28)

(F) D L' D' F // EO (5)
R' // 4c4e (6)
(B2 U' B2 R2 D R) // 12 2c4 4e
F2 D' (U' B2 U' B2 U) // HTR (19)
F2 D2^ F2 D2^ // Floppy (23)
B2 L2 F2 // Slice (26)
^=w
+0

Found and wrote down within 25 mins (I'm sure a lot of other people found this)
(B R2 U') // EO (3)
(F D2 B2 L' B L') // 9 2c3
F' (B2 U2 F' L2 F') // HTR (15)
(U2 R2 D2 R2 D2 B2 U2 R2) // Finish (23)

U' L' B R' D // EO (5)
B // 3c2e RZP (6)
(R' B' R B) // 10 4c3 2e
(U2 L U2 F2 R') L2 D2 R'^ // HTR (18)
D2 $ B2 R2^ B2 // Slice (22)
^=w
$=M
+2 bruh

best thing I found was 27 to slice off of  11 4a1 4e bruh

B (D R U B) // EO (5)
L' // 4c4e RZP (6)
B2 U' F2 L2 U' R2 D' R' // 14 4b2 2e
Uw2 L2 Uw2 R2 U B2 U // HTR (21)
F2 R2 F2 U2 R2 // Finish (26)

(R) D R2 D R // EO (5)
D' L2 U' F' D2 F // 11 2c4 4e
U'^ B2 D'^ $ L2 D^ L2 D // HTR (18)
R2 L2 U2 B2 L2 // Slice (23)
^=w
$=E'
+1 on 4q bruhhhh

POV: you don't feel like dnfing

(F' B R2 U) // 4
(L) // 5 4c4e
F2 R2 U2 F' R2 B' R' // 12 4b2 2e
L2 U2 F D2 F // 17
D2 F2 D2 R2 $ U2 D2 // M (23)

$=M' U2 M U2

23+(6-3)=26

(F) L2 U L' F' // EO (5/5)
(L' D2 R2 D2 R U) // 11 2c3 4e
(F2 R F2 Lw B2 Lw) // HTR (6/17)
(Rw2) // E

Skeleton:
L2 U L' F' Rw2 Lw' B2 Lw' F2 R' F2 U' R' D2 R2 D2 L F' $
$=F B' R2 F' B U2
18+(6-2)=22
pb2!

F (R U B') // EO (4/4)
U R' D2 F2 L // DR (5/9)
(L2 B2 U' R2 U B2 U') // HTR (7/16)
(F2 R2 F2 R2 F2 R2 D2 L2 U2) // BRUH (9/25)

Here's something better I found soon after the attempt:
F (R U B') // EO (4/4)
U R' D2 F2 L // DR (5/9)
(L2 F2 U) U2 R2 U' R2 U' // HTR (8/17)
B2 D2 L2 R2 // Slice (4/21)
+1 for 22

oh well

I didn't even know you could solve that htr in 6 moves :( (that's how people got 19 ig)

(D) U2 F L' U // EO (5/5)
R2 F // RZP (2/7)
(B2 L' F' L2 F') // DR (5/12)
L' (B2 D2 R' D2 R' D2 R') // HTR (8/20)
(D2 R2 D2 F2 L2 F2 L2 F2) // Finish (8/28)

(U L' B2 U) // EO (4/4)
(L') // RZP (1/5)
(U2 D2 F' R D2 R) // DR (6/11)
(F' L2 F) // HTR (3/14)
(L2 U2 F2 U2 F2 U2 R2 U2 R2 D2) // BRUH (10/24)
+0

U R L' F' // EO (4/4)
D // RZP (1/5)
U2 B2 R L' U2 L' D // DR (7/12)
(L' D2 L') U2 B2 D2 F2 L U2 L // HTR (10/22)
F2 R2 U2 D2 // lol (4/26)

(B R U D L) // EO (5/5)
(F) // RZP (1/6)
R2 D L2 D' B' U2 B // DR (7/13)
D F2 R2 L2 U' L2 U // HTR (7/20)
F2 U2 R2 F2 U2 B2 R2 B2 // Slice (8/28)
+1

L' D B R U // EO (5/5)
(R B2 R' D2 B) // DR (5/10)
(L2 D2 L* F2 R' U2 R') // HTR (7/17)
L2 B2 U2 R2^ // FR (4/21)
F2 D2 F2 // Slice (3/24)
^=w
*=M2
+1