Yes, the model moves to the next time step before the whole 20 iterations is reached.

I am going to test using your recommendations. When you say switch off load balancing, what do you mean? Currently in my partitioning and load balancing dialog box under dynamic load balancing only mesh adaption is checked and the threshold is at 5% (This is my first time using this dialog box, I usually set partitioning using the console). What do you mean by reorder domain? It is set to method: metis with the number of partitions set to N nodes.