I am training WGAN -GP to generate X-ray images. After 1240 epochs I came up with this image.

fake_images-12401022×512 270 KB

Should I stop here and make some hyperparameters tunings or should I continue with more epochs?
In addition to it, I would also like to know on average how many epochs are usually required to train a model which is expected to generate images.
Any help shall be highly appreciated.