I have created a simple GUI menu for my inventory system. However, I’m finding that scaling some sprites (using slice9) is causing blurriness which doesn’t appear as such in the editor at high zoom levels. See below image:
The arrows have slice9 x/z values of 5 pixels in order to elongate them to fill the button properly. However, in game they appear blurry 
Strangely the item placeholder graphics I created look blurry in the editor, but appear sharp in game 