[EDIT} Some time passed from this contest and since everyobody seems to refer to this as my present portfolio, to avoid confusion i'm editing it... :poly136:
I had to edit mesh maps so I right clicked on mesh normal maps in library of substance painter and export it to click export resource. and substance painter give me 27mb png, I edit it from photoshop, and it's time to export. but here's the thing. if i ctrl+shift+alt+s to save it as png (using PNG-24 preset), it give me…