[Bug or feature?] Ants waiting at the nest exit

[HofNerd]

So many ants, all waiting at the nest exit.
It looks like the nest entrance throughput is a bit low for large ant colonies. (Bug or feature?)


Having grouped up all ants into one huge group solved the traffic jam for some reason?

 

[HofNerd]

It seems I was wrong about it. Grouping them up does not prevent nest exit traffic jams.