Map ?-4 is just pure RNG, really. You press a button, pray RNG goes well and that's it. Sure, you can try to tweak so that slower teams go upwards "in case" the faster teams go down and manage something there, but i cleared the map with having my 600+ speed 1st team just run around everywhere and RNG goodness everything in existence. In the end, horrible RNG won't help you clear that map no matter what you do.