[porkynator]

1.
Scramble: R' U' F D2 R F2 U2 L2 R' U2 F2 R U L B L D R B' D R F2 U R' U' F
Solution (1hr): F2 U' R2 L2 D F2 U D F2 U' L2 D' B2 L2 R2 F D' L D U' R2 (25)
Solution (no time limit): F2 D' B2 F2 D L2 D2 F2 D' B2 U' B2 L2 R2 F D' L D U' R2 (24)

Spoiler (Click to View)

(R2) //Random move to influence DR setup (1/1)
(U D' L') //EO (3/4)
(D F') //Simplify 4-1 (2/6)
(U2 F' L2 F [1]) //DR with easy corners (4/10)
(U L2 D B2 U' D' B2 [2] F2) //3e3e (8/18)

[1] = F2 M2 F2 (4-1/21)
[2] = U' M2 U (4/25)

Solution: F2 {U' R2 L2 D F2 U D F2 U' L2 D'} B2 L2 R2 F D' L D U' R2 (25)

After the hour I found the replacement {} = D' B2 F2 D L2 D2 F2 D' B2 U'.

2.
Scramble: R' U' F U2 R D2 R2 F2 U2 R D2 B' L R F L2 F R2 D F D R' U' F
Solution (with a rotation!!!): L B2 R L' U2 D2 x2 L F R2 U' B U' R2 B2 R2 B2 U B2 R2 B2 L2 F2 U' L2 D F2 D (27)

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L F2 [x1] R' //EO (3/3)
L2 F //Simplify 4-2 (2/5)
R2 U' B //DR (3/8)
U' [e1] B2 R2 U L2 [e2] U' L2 D F2 D //5e4x (10/18)

[e1] = R2 B2 R2 B2 R2 B2 (6-4/20)
[e2] = L2 B2 R2 B2 L2 F2 (6-2/24)
[x1] = F2 B2 R L' U2 D2 R L' x2 (8-5/27)

3.
Scramble: R' U' F L2 D' U' F2 L2 B2 F' D2 R D L2 D L R' B D2 B' R' U' F
Solution (1hr): U2 B2 U' L2 B2 U' R2 F2 D' F2 R2 B2 U D L' U2 L D2 R2 U' B2 U2 L' D2 B U' R D2 (28)
Solution (no time limit): R' D' R2 F B U' L' U2 R' F D' L F' R' F L' F' R D2 R2 D B' L' D2 L B R' (27)

Spoiler (Click to View)

Backup solve. I had some DRs in 12 without good continuations. I have also spent some time looking at block starts, I was very close to the no-time-limit 27 during the hour.

(D2 R' U B') //EO (4/4)
(D2 L) //Simplify 4-1 (2/6)
(U2 B2 U R2 D2) //Setup (5/11)
(L' U2 L) //DR (3/14)
(U L2 * D F2 R2 U F2 D2) //3e + E layer (8/22)

* = L2 U L2 B2 R2 D R2 B2 (8-3/27)

Domino part: U2 L2 B2 R2 D R2 B2 {D F2 R2 U F2 D2}
Change {} with U L2 U D' L2 U B2 U2 (Solved in 29)
New domino: U2 [2] L2 B2 R2 D R2 B2 U L2 U D' [1] L2 U B2 U2
[1] = E' (2-4)
[2] = E (2-1)
Final domino: U' D' B2 R2 F2 D F2 R2 U B2 L2 U B2 U2

No time limit:
R' D' R2 F //321 (4/4)
B U' L' U2 //223 + pairs (4/8)
(R B' L' D2 L B D') //2 squares (7/15)
(R2 D2 F D F' R) //3c (6/21)

Skeleton: R' D' R2 F B U' L' U2 R' F D' * F' D2 R2 D B' L' D2 L B R'
* = L F' R' F L F' R F (8-2/27)

25(24), 27, 28(27) = 26.67(26.00)