The video by @Contraption8or: https://www.youtube.com/watch?v=mMeE0bqxBKs
Better explanation of the abbas I used by @G4me4u & @SpaceWalkerChannel: https://www.youtube.com/watch?v=u8orNrDjvY0
Opening: 0.3 seconds, 0.45s seamless
Closing: instant, 0.15s seamless
Volume: 15x12x4, 720 blocks
World download: https://www.mediafire.com/file/k5odczbxqy8p753/Fastest_Mumbo_Jumbo_door.zip/file