Vertex AI Auto ML Image object detect model taking longer than usual

[Ajithkumar7]

I have started 5 Auto ML image object detection model training in us-central1 location yesterday and specified different budget training node hours as 25 and 30 respectively. The estimated model training time shown as 2 hours. But all the 5 training pipeline is running for more than 16 hours and it is not completed and still in training and I stopped the training. Kindly explain why it is taking more than the expected time. 

Already I have trained few Image object detection models with 40 node hours. It took around 4 hours to complete the model training.