Hi there!
I added a cover image to my book page and made sure the size of the image is exactly 630x500 but for some reason, this cover image is a bit blurred on my profile page while all my other cover images appear crisp.
If you compare the similar game cover "Tools and Resources" with the book cover "Plight of the Innocent", you may be able to tell that the latter is a bit blurry.
I'm thinking it's related to the upload classification being set to "Book" because that's the only difference with the two pages but I'm not sure. What ever the case may be, it would be really nice to have the cover image quality match so hopefully this is something that could be fixed.
Thanks :)