Earlier I said:
I just realized, the stunt performers would've surely been on wires when they jumped, so maybe they were lowered in "slow motion" while the camera drone circled them.
There was a "bullet time" shot of the camera swooping around the Lupinrangers as they jumped off the skywalk bridge in slow motion, and I can't figure out how they did that. Some of the other shots in that sequence seemed to be shot with drones, but that one would've required the drone to move impossibly fast, I'd think.
I just realized, the stunt performers would've surely been on wires when they jumped, so maybe they were lowered in "slow motion" while the camera drone circled them.