Forums / Questions and Answers / Troop training have no spread

So I have two armouries both training troops. In one armoury the troops are spread throughout the enitre time needed to train them and in the other the troops are all bunched up together at the very end. Both armouries get the same training time but the bunched up one has less than 100% productivity and also has around 1000 guardtowers in it. Are those reasons for why that armoury is bunching up the training or is it something else?

it's the productivity.