Oh yes, to the highest degree.
Especially on Siptah.
A year ago, I couldn’t call for a purge anywhere on the southwestern island. It just didn’t come even with the convergence trap. Then I built my base in the very south of the southeastern island, on the beach. And everything was fine until I wanted to extend the pier into the sea. Then the purge broke down: the first wave of the purge was, as before, from the outside, and all subsequent ones spawned inside the base. This was repeated every time, i.e. it was not a bug, but an algorithm solution.