R' (D2 B L) //EO 4/4
D , B F' U' F D //2c3 4e with 4 variations but 2 of those are 5qt and two are 2c3. 6/10
R2 F' L2 U2 F^ D2 B^ //HTR 7/17
U2 B2 //2e+slice 2/19
B2 U2 R2 F2 R2 U2 B2 L2 //slice 8-5/22
^=w //+0/22

DR is 21 opt but needs 8 mobe HTR and there were TONS of 6-7 move HTRs from both variations on normal and inverse and with NISS so I didnt even have time to look at any 8 move HTRs.

Only good DRs I had. Next best I had was 2c4 in 11. And this was the last EO I checked.

(F' R) D' L' //EO+rzp 4c6e 4/4
B F' U2 F U R2 D //2c3 7/11
L2 F R2 F'^ R2 F^ //HTR 6/17
D2 [L2 U2] B2 D2 //double slice 5/22
[]=R2 D2 L2 R2 //slice 2/24
^=w //+0/24

Bad solve. Messed up some EOs on inverse and wasted a lot of time on that stuff.
DR is 23 opt but quite hard to find in time trouble.

L' F' U2 B //EO 4/4
L (B2 R2 L D' L) //2c4 6/10
(U' R2 D^ R2 B2 D^ R2 D) //HTR 8/18
(B2 U2^ B2) //double slice 3/21
(B2 R L' D2 R' L) //slice 6-4/23
^=w //+0/23
DR opt from all DRs I had time to look at.

Also looked at:
L' B' R2 F , R' , U D' L D L //4b2 4e in 10, 23 opt but those seem really hard
And the extension
L' B' R2 F , R , L2 U' D L U L //4b2 2e in 11, 24 opt findable with 4qt

(B' U' F' R) //EO+rzp 4/4
(D2 B2 F2 D' F2 @ U' F) //4b2 2e 7/11
U'^ L2 F2 B2 * D'^ //HTR 5/16
L2 R2 //2e+slice 2/18
*= B2 D2^ F2 U2 F2 D2^ //slice +3/21
^=w  //+0/21

There is also a 20 to slice if you insert 
@= F2 D2 F2 U2 B2 U2 but that seems to be +2 unfortunately.

But wow! This gives 20,18,21 = 19.67!! tied PB mo3!

F' L B //EO+rzp 3/3
(L B2 L F2 L' D) //4b2 4e 6/9
(F2 [L B2 U2 R']) //HTR in 14 with 4 variations! 5/14
(D2 B2 L2 B2) //slice 4-1/17
[]= Lw B2 U2 Rw R2 //+1/18

Very trivial 18. The only possible pitfall I can see is that there is another DR in 9 from same rzp so you might find that and not look for more and miss this DR because of that.
I actually found that DR first and it gives 21 but luckily I looked for more...
F' L B' //EO+rzp
(D2 B2 R F2 R' D) //4c3 in 9
(R) D2 F2 L' D2 L' //HTR in 15
[U2 L2 B2] R2 //double slice in 19-1=18
[]= D2 R2 F2 U2 D2 //slice in 20 and +1 for 21

(B' U' D R) //EO + rzp 4/4
(U) (B' D2 F' U2 F2 U) //2c3 4e with variations 7/11
([F' U2 D2 R2 B' D2 B]) //HTR 7/18
(L2) //slice :D 1/19
[]=B' R2 L2 D2 B F2 R2 F //+1/20

Also had this variation heavy set of 2c3 4e in 11 DRs:
D (F' U D) //EO
(R) B2 U2 F' R2 B' L //2c3 4e with lots variations

(U' D2 B' R2 D) //EO+rzp 3c2e 5/5
U2 F2 L2 B' L B' //4b2 2e 6/11
D2 B2 [L' F2 L //HTR 5/16
B2 U2 B2 //double slice 3/19
B2 U2 L2] U2 B2 D2 R2 D2 //slice 8-5= 3/22
[]= R' D2 L2 R' F2 R2 //+1/23

optimal from this DR but 4e variation D2 B2 R2 F' R F has a 21.
I looked at that variation also but I didnt get that far since I found these DRs quite late.

(L2 F U2 F) //EO 4/4
(U') L' R' F2 L F2 D' //2c3 4e 7/11
(R) F2 B2 L2 U2 L^ F2 L^ //HTR 8/19
B2 R2^ D2 F2 D2 //slice 5/24
^=w //+0

I had lots of sub12 DRs but all except this were 4 or 5qt...

Also had this:
(.) //E-slice EO on F/B
(U' R) //rzp 4c2e 2/2
U' D2 B U2 B //DR-2s 5/7
(R' L) //DR-1s 0/7 
But of course that is 5qt so I didnt even try to solve it. Cool DR is always bad subset...

R F' D L //EO+rzp 4/4
(F L2 U2 F) //2c4 4/8 with variations!
(R2 U) U' F2 R2 U'^ L2 U'^ //HTR 8/16
R2 D2^ R2 F2 //slice 4/20
^=w //+0

Pretty slow set of DRs to check since you want to switch (L2 U), (R2 U), (' L2 U) and (' R2 U) from all 4 variations so 16 NISSes but it is DR in 8 so it was worth it to spend lots of time on.

L F' U2 B' //EO 4/4
R , U2 F2 D' {R F2 D2 L} //2c3 2e 8/12
(D' R2 B2 D'^ B2 D B2 L2) //almost a double slice but has parity 8-1/19
Luckily we know we can fix party issue by doing either 
{} = R B2 U2 R or {} = L U2 F2 L
the latter gives 2e2e+slice directly so we do that.
And then 2e2e solves nicely with
(L2 B2 L2 B2 L2 ^^ B2) //slice 6-3 2/22
^=w
^^=Uw' U //+2/24

Almost got bailed out from not finding any good DRs (this and 4c4 in 10 were the best ones) but unlucky slices give 24 in the end. Kind of deserved tbh...

Horrible that I had to use 12 move DR but at least it had 4 variations so it was still propably going to give 23-24. It is 23 opt but not trivial since there were variationsit needs 1 move longer LS that I had and it happens to be +0.

L F2 R //EO 3/3
D' B , D2 F U' F' //2c3 4e 6/9
B2 U^ (D^ B2 U2 F2 D') //HTR +2 ext 7/16
L2 B2 L2 D2 B2 U2 //slice 6-1/21
^=w //+0/21

Had several 4c3 in 10 DRs but used most of my time on this one so I tried all 1-2 move reductions to 4b2.

B' D' F' L' //EO 4/4
B' , R2 D' F' U' F' //4c3 8e 6/10 
(F2 U) U2 F2 U L2 F2 U //HTR directly to pure blockyfish :D 8/18
B2 D2 L2 //solved 3/21

4c3 8e solved in 11 moves :D

There were some annoying jzps I found that turned out to be not so good so I wasted a lot of time on those. At least:
U B (D' F) , R2 D //jzp (and 4c4e on one side) in 6
R2 U(or U') B' D F //jzp (and 4c4e on one side) in 5

D B2 F' U //jzp 4/4
B2 D2 F2 R' B2 L //2c4 +1 extension 6/10
U2 F R2 F'^ D2 F^ D2 F //HTR 8/18
L2 D2 L2 B2 //slice 4/22
^=w //+0

Had an early backup 23:
D B2 F' U' //jzp 4/4
R2 B2 L' F2 R //2c4 5/9
(F) U2 F R2 D2 F U2 F //HTR 8/17
U2 F2 D2 L2 U2 R2 //solved 6/23
I also had the L2 F2 variation but missed the B2 D2 variation that gives a reasonably easy 22.
Luckily the extension saved the 22 anyway.

(L D2 B' D) //EO+rzp 4c4e 4/22
U2 D2 B2 R B' //4a1 4e 5/9
D2 F2 D2 {F2 L'} //HTR 5/14
F2 [L2 F2 D2] //double slice 4-1/17
[]= U' D F2 R2 U D //slice +2/19
{}= R2 L2 B2 L R2 //+3/22

I also tried solving wrong slice first. You can get the normal slice in +1 but the wrong slice becomes horrible +4 :D
D2 F2 D2 F2 [L' //HTR 5/14
F2 L2] F2 D2 //double slice 4-1/17
[]=L R2 B2 R2 //wrong slice +1/18 but it really sucks

Double slice is 21 opt BUT you have to solve wrong slice last AND you have to solve normal slice unoptimally with +1 instead of +0 so didnt find that:
D2 F2 D2 F2 L' //HTR 5/14
F2 [L2 F2] D2} //double slice 4-1/17
[]=R2 B2 L2 {R2 //wrong slice +2/19
{}=D U' B2 U D //+2/21

(B L' F) //EO+rzp 4c6e 3/3
(R2 L2 D U2 R F2 L) //2c3 6e 7/10
(U) R2 U ^ R2 U' //HTR 5/15
R' L F2 R L B2 //slice 6/21
^=E2 //+1/22

Had so many 10 move DRs but all except this one were 4-5qt.
Also the 8 move DR but it was 4c4 and seemed hopeless. And NISSY confirms that it is 22 opt and all optimals seem unfindable (either 6qt or some DR breaking nonsense...)

(R2 F' L D) //EO 4/4
(B) (F2 L' D2 R B) //4b2 4e 6/10
L D2 L^ F2 L'^ U2 B2 D2 R //HTR 9/19 nice path 4b2 4e -> 4a1 2e -> 0c0 2e
F2 B2 L2 F2 B2 //slice 5-1/23
^=w //+0/23

DR is 22 optimal by switching L D2 L. I was so close to finding that but there were so many HTR variations that I didn't quite get there in time..

edit: damn I didnt NISS the rzp since I didnt realise it was 21 ARM... stupid mistake again.

L2 U2 R' F' //EO 4/4
L' (R2 U' R2 L2 D' L) //4a2 6e 7/11
U (U2 R2 B2 U') //HTR 5/16
(L2 U2 L2 F2) //wrong slice 4/20
(F2 L2 F2 U2 B2 R2 B2 U2) //solved 8-5/23

Other DRs I looked at:
D2 R' B' , L' , D' B2 L2 U D2 L //2c4 in 10. There is a 23 but needs 10 move HTR so nope.
D2 R' B (D') (L F2 R U' R' D) //and variation 2c4 in 10 but doomed. 24 opt.

edit: WOW I missed a set of linear 4 move EOs... Dont remember when this has happened last time. R* D2 R' B

U B' D' F //EO+rzp 4c4e 4/4
(R' D B2 R2 U2 R' D') //nice vibe DR solution for 4a1 4e 7/11
(F2 {L2 B2 L'}) //HTR +1 extension for 4/15
(D2 [B2 D2 R2]) //double slice 4/19
[]= B' F' R2 U2 B' F //slice +1/20
{}= R2 F2 L R2 //+1/21

Unique optimal from DR!

Happy with this since I found the non-trivial (at least for me) DR and then unique optimal from that via double slice.

Also ties cubelib with my settings.

L' D F' D //EO+rzp 4/4
(L2 B R2 F' D2 F' R') //2c3 2e 7/11
(D2 F D2 F' R2 U2 F') //HTR 7/18
(U2 B2 R2 L2 U2 L2) //solved 6/24

Really bad performance this week... 

R' B' F' R //EO+rzp 4/4
F2 U2 D' B //4c3 4/8
U2 B2 D L2 U2 F2 U' R2 U //HTR 9/17
R2 F2 D2 R2 F2 R2 F2 //solved 7/24

Somehow just couldnt find a good finish...

(D F' L B) //EO 4/4
(D) L R2 D F2 R2 D //2c3 4e with variations 7/11
B2 L'^ (L2 D2 B2 L'^ B2 L) //HTR 8/19
(D2 B2 D2 B2) //slice 4/23 
^=w //+0/23

Only DR set that I had so had lots of time to NISS all 2 move reductions to 4b2 2e from all 4 variations.

Also had this:
. //E slice EO on U/D axis
L' //rzp 4c4e
D2 F B2 R //2c4-2s in 5

But shortest slice fixes are 5 moves and only one of them gives a promising subset of 4b2 2e:
U D' R' B2 R F B' //4b2 2e in 12 but the HTRs on the other side are not good so I was quite quick to discard this DR-Xs...

B2 D B //EO 3/3
L D' (B2 L' U2 R' U) //4a2 2e 7/10
(R^) R D2 R'^ F2 D2 F2 R' //HTR 8/18
U2 B2 U2 R2^ F2 //slice 5/23 
^=w //+0/23

Non-trivial optimal from DR. Had to use 4qt 4a2 -> 4a1 2e -> 0c0 2e path.

There were some 22s but I didnt have time to exhaustively check all 4 move EOs fro rzp in 5 so kind of okay to miss those.

(U F' U) //EO 3/3
(R') B R //2c5 3/6 obviously DR in 6 will be 5qt.....
(B L2 F' D2 R2 B' U2 B U2 B) //HTR 10/16
(R2 B2 D2 [R2 F2]) //wrong slice 5/21
[]=R L D2 L' R //+3 but -2 with normal so +1/22

Also had some other 16 movers from this DR but unfortunately nothing better. It is 14 opt but needs HT before reduction so quite hard.

(B D R D2 L) //EO 5/5
(U2 F) //rzp 2c3e 2/7
D2 F2 U B' D B' //DR 2c3 2e 6/13
U' L2 U' L2 U //HTR 5/18
R2 B F' R2 B F //solved 6-2/22

Most Kalindu solution I have had in a long time :D
Rzp in 7, DR in 13 and 9 move finish...
I was looking for 6 move rzps since scramble sucks but happened to see the 7 to 3c2e.
Then after switching I just solved the shortest DR anyway since I already switched. And it just happened to be straight in the 5 move trigger. So I just tried the 2 possible 5 move HTRs and instantly found this :D

Rough scramble.

Had these DR-Xs but they both suck...

L , D2 F , R2 D2 F' D' F //4b2-2s in 8 but no short slice fixes
F, D , L R U2 R U //2c4-2s but 2c4 and -2s so not promising

R' F' D //EO 3/3
(L B) U2 L2 F2 L B' //2c4 7/10
R (R^ U2 R^ F2 R') //HTR 6/16
(D2 F2 * B2) //2e+slice 3/19
*= F2 D2 B2 L2 U2 B2 D2 R2^ //slice 8-4/23
^=w //+0/23

L U2 D B //EO+rzp 4/4
U2 L' B2 U' L2 U' //2c3 4e 6/10
(R' U2 R) F2 U2 F2 R //HTR 7/17
U2 F2 R2 D2 //slice 4/21
+1/22

(R F U') //EO 3/3
(R' B') (L' R' F2 R' U2 B) //4b2 4e 8/11
B2 L2 B2 L' B2 U2 R' //HTR 7/18
U2 F2 L2 D2 B2 //solved 5-1/22

(R) F2 R //EO 3/3
B' , D B2 D2 F U F' //4a2 4e 7/10 you can also do B instead of B'
[U B2 R2 U2 R2 U] //6/16 HTR
F2 L2 F2 B2 //slice 4/20
[]= Uw B2 R2 U2 R2 Uw' U2] //+1/21
Optimal from these 2 DRs. There is 19 to slice with NISS HTR that I had but slice sucks.

Overwhelming scramble. So many 10 move DRs to check that I couldn't check them all.

Missed the 9 move DR that gives 20:
(B R2 U')             // eoud       (3/3)
(F)                   // rzplr-eoud (1/4)
R D2 R2 D2 F          // drlr-eoud  (5/9)
This 20 I should have found...

There is also a 19 but from DR in 11 and no way I'm checking DRs in 11 on this scramble.

U' L' B  R' D //EO 5/5
B (R' B' R B') //4c3 5/10
(D2 L'^ F2 L'^) D2 L2 B2 L //HTR via shortest possible reduction to 4a1 4e 8/18
D2 B2 R2^ B2 //slice 4/22
^=w //+0

Other:
+1 extensions from final DR:
U' L' B R' D, B (R' D2 B' R B)
U' L' B R' D, B (R' U2 F' L F) //2c3 4e in 11

(L' U' B' L2 D) F' U2 F2 R' B2 R //4c3 in 11
(L' U' B' L2 D) L' R' F2 B' L' B //4a2 6e in 11

L U2 B //EO+rzp 3/3
(R2 U' B2 D' U2 L2 U L') //4b2 2e 8/11 with 4 variations
R2 U2 L2 U^ B2 D^ //shortest HTR on the other side so "whack the variations" was easy... 6/17
(U2^ F2 L2 B2 L2 D2) //slice 6-1/22
^= +0/22

Also had:
L' U2 B (U L D B2 L U2 D2 R) //2c3 4e in 11
and the flipped variation:
L' U2 B F2 U F2 U R2 D (U L D) //0c0 4e in 12

R (R2 D2 R') //EO 4/4
(U') B L2 D'F U' //2c3 4e 6/10
L2 F (B' U2 R2 F') //HTR 6/16
(D2 L2 U2 L2 B2) //double slice 5/21 but really 20 since F (B2) 

Now solving this "normally" by doing wrong slice first was hopeless +3 and +2. 
But since this was the only DR I had I tried the other way around.
After DR we have:
(B' U2 R2 [F' D2 L2 U2 L2 B2 F'] L2)
[]= F {B2 U2 R2 D2} R2 F //wrong slice +0/21
{}= U2 D2 F2 U2 L2 U2 R2 //+2/23

I think this was the first time I found this kind of slice solution!

I had:
U R F L U'
B2 R2 F U2 F2 R //4b2 4e and variation in 11 but those absolutely suck...

Also had:
(D L2 U' F2 U' D B) //DR-2s in 7 but it is 4b5 so no hope there.

(U' F' D R L') //EO+rzp 5/5
D' F2 D2 R2 L2 U' F' //4a1 6e 7/12
I really wanted to get U R L type DR to try HTR-1s / HTR-2s stuff :D
Of course I also checked the 2 mover but DR in 11, from R' B (L) rzp, was the best I could do. 
And I argue that U R L DR in 12 is better than "normal" DR in 11.
Especially since my DR in 11 was 2c4. But here that 2c4 happened to have a 10 move finish :DDD

"Unfortunately" here optimal was not of the HTR-2s form but rather "normal" HTR-1s form:
D R2 L2 U L2 U' //HTR 6/18
B2 D2 //"FR" for the slice we try to solve here 2/20
L2 B2 R2 ^ F2 ^^//M slice 24/24 but we will most likely cancel moves slicing since we have R L'
^=M' //+1/25
^=M  //-3/22 R L' from inverse cancels and the D cancels because last F2 becomes D2

Not super cool because no HTR-2s but still quite cool!