I just noticed a strange phenomenon recently, that is the featured image is always very pixelated, as if heavily compressed. Of course the actual JPEG is not like that, if you right click and view the image directly, it'll be rendered sharp. (I save using a 90% JPEG quality, but on the page it shows like a 60% JPEG quality).
Any idea why? The files are saved in the exact 848px dimension, although the height changes a little from images to images.
Thanks.
