PS 4 "Optimized" .jpg

[mbalensiefer]

When re-saving my images in PS4, I have the choice of (Progressive .jpg,) Standard .jpg, or Optimized .jpg.
 Sometimes when my system resources are used, I get a message from PS saying that I my files can not be saved as Optimized--which is usually what I save my files as.

 What is the optimized setting good for?

Thanks!!
Michael

[DarkPenguin]

When re-saving my images in PS4, I have the choice of (Progressive .jpg,) Standard .jpg, or Optimized .jpg.
 Sometimes when my system resources are used, I get a message from PS saying that I my files can not be saved as Optimized--which is usually what I save my files as.

 What is the optimized setting good for?

Thanks!!
Michael

A quick search found this ...

http://www.impulseadventure.com/photo/optimized-jpeg.html

[MarkIV]

I always use the one with the most data saved.