I read the site mostly on my OnePlus 2 Android device (using Chrome). Since the redesign all the header images on posts are appearing pixelated / low quality, but the images in the body of the posts are fine. This happens on the main page and remains when you click into the posts.
Example (I’m only allowed one as a new user, let me know if more would help):
I figure this might be intentional to lower bandwidth requirements when opening the main page? If so, the trade-off is that all the games look a bit of sludgy mess until you click into articles. Viewing the site in landscape mode makes it look even worse!