In Sales Order Create Page, every change you make is being saved right away. While we are saving, you are locked out of making any additional changes. To make matters worse, on larger order, each save could take 10 - 20 seconds.
With the new batched auto save, we will accumulate your changes for a couple of seconds before making API call to save your changes. While the save is in progress, you can continue making further changes and updates.
We will still prevent you from publishing the Sales Order while the auto save is in progress but you should see a remarkable improvement in performance.