2x2-4x4 Relay in 57.02 Seconds!
My first attempt was a 1:01 and then it took me another 40 minutes to get sub-1 minute lol
Scrambles so you can see I'm not cheating
2x2 (3.6s): U' F U F2 U2 R2 U' F2 U'
3x3 (10.3s): U2 L2 U' L U2 B' D2 B' R2 L2 U2 B2 U' F2 R2 L2 U' F2 D2 L'
4x4 (41.5s): F2 D2 F' U2 B D2 L2 U2 L2 F L' U D2 R' U2 D' F2 B2 R Fw2 R' D L Rw2 D' Uw2 R' Fw2 U R D' Rw2 B' D2 Fw' U Rw2 F' Uw' Fw' D L' F Rw