About the number of training iterations

[WongJianyang]

The default training is 4000 epochs, which is too time-consuming. If I change to 500 epochs, will the test result drop too much?

[jiangsutx]

Yes, the performance will drop.
But I think 500 epochs will be enough to see a difference between output and input. I mean sharper and clearer images.

You may finetune using existing models.