[porkynator]

1.
Scramble: R' U' F D2 U2 R2 F L2 B' R2 F2 D2 F U2 L' B F2 D R B2 D2 R D' R' U' F
Solution: U D2 R' U' R F2 B2 L' D R2 U L U2 D' B2 U' D2 F2 L' D F U2 R' B' (24)

Spoiler (Click to View)

(B R U2 F') //EO (4/4)
(D' L) //Simplify 3-1 (2/6)
U D2 R' [1] L2 D R //DR (6/12)
U F2 D F2 //2e2e4x + E-slice (4/16)

[1] = U' R S2 R' U

Rewrite up to DR:
(B R U2 F' D' L) U D2 R' U' R F2 B2 L' D R2 U L //DR
U2 D' B2 U' D2 F2 //Finish

2.
Scramble: R' U' F R2 U2 B2 D2 R2 U2 R2 F' D B U R B' F' L' R2 U R2 B2 F' R' U' F
Solution: B' R' F2 L U' B2 F2 D2 R2 U F U' R2 D B R2 D' F U2 B2 D' R2 D2 R2 (24)

Spoiler (Click to View)

B' R' F2 L //EO (4/4)
U' B //4-2 (2/6)
F2 * D' B2 R2 D' F //DR (6/12)
U2 B2 D' R2 D2 R2 //2e2c (6/18)

* = B D2 R2 U F U' R2 D B' D (10-4/24)

3.
Scramble: R' U' F D2 R U2 L' B2 R F2 L2 D L' U B2 L' D' B' R' U2 R' F R' U' F
1hr: DNF
Solution (no time limit): U' F' R2 L2 B' F U' D2 F' R2 D2 R F2 U L2 F2 R2 F2 D' B2 D F2 U L D L' (26)

Spoiler (Click to View)

Unfortunately I have found this EO (and DR) at ~40 minutes in. Then I tried to insert a 2e2c (from this DR), but there was no good insertion and I decided to just solve corners an leave 6 (?) edges, but then time ran out.

U' B F2 [x] D F' //EO (5/5)
L2 U2 L' (L D' L') //DR (6/11)
B2 [e] U' F2 U' B2 U F2 D //3e4x (8/19)

[e] = B2 L2 F2 D R2 F2 L2 U (8-5/22)
[x] = S' E2 S E2 (8-4/26)

Alternatively, after the first insertion:

(L D' L') U' B F2 D F' L2 U2 L F2 D {R2 F2 L2 F2} U' B2 U F2 D +

Replace {} with B2 R2 for 2e2e4x in 20
+ = B2 D S2 D' B2 (6/26)

24, 24, DNF(26) = DNF(24.7)