If it's not based on filling up a race with co-ops in the order that they start racing (starting a new group every 15 co-ops), the algorithm for placing co-ops in a group would have to know how many co-ops were going to be racing. Then you could determine how many groups of 15 there were going to be and assign co-ops accordingly, such as first to Group A, second to Group B, third to Group C, fourth to Group A, and so on. Does Playrix really care enough about delayed start to set up a complicated algorithm?
Delayed start can also be linked to the theory that the winner of a race that ends in a tie is based on how long it took the team to get there and not the time they finished.
Both of these theories are almost unproveable without a lot of cooperation/coordination between a large number of co-ops, so not going to happen. LOL
So, until proven otherwise, I will continue to believe in the benefits of a delayed start (and the Tooth Fairy).
Windows, lvl 45