I had to use the increase/decrease abilities to get that stage done.
If I remember correctly, one team super fast and all the others super slow (2nd team on left does not need warp speed, so I put the helper I think)

I finally got it but in a different way

I had 2 squads w/ 300 speed range and the left tent w/ 500-680 speed

that stage was weird

Putting my second fastest squad in the far right tent and everyone else in the far left tent works for me every time.

Edit: I misspoke because I confused this with the 80 stamina map. I actually stuck my slowest (553) squad on the far right. Everyone else still goes left.

I stopped reading the stories after they put maintenance several hours early without notifying their players via the scrolling bar, missed a set of event equipment because of that