Low resolution menu image

Pretty much the title. Menu images have been super low res for me. It’s been this way since around the second season of OW2. Dynamic images (like Amaterasu Kiriko menu intro with the music) is fine though. I have reinstalled OW2, clean installed Windows even (for an unrelated reason) but this issue persists.

My game resolution is set to 1440p (native monitor res) at 100% 3D resolution and I am on a reasonably fast fiber internet connection as well so I have no idea why this could be happening.
Help/advice would be appreciated

I recommend reporting this in Bug Report

It may be a combination of several factors causing this, but I’ve never heard of this issue.