Something's on my screen and it won't come off

[CustomSurfaceP2]

My new one works fine so far, I used it to watch HD videos for 3 hrs and re-install a bunch of programs yesterday totalling 6 hours nonstop from a full charge and still had 40% battery life left...batterybarpro said I have 2.5hrs left to go and this one didn't even get warm to the touch watching videos like my previous pro 3. Screen is still silky smooth, regardless of what type of microfiber/cotton cloth I use to wipe the screen, it should not scratch that easily so I think it has to do with the oleophobic coating process from the manufacture. I use Manga Studio 5, Photoshop CC, ArtRage and Sketchbook pro for my artwork. Particularly love the fluidity of ArtRage and Sketchbook but the Pressure Customization of Manga Studio is the best. I don't use photoshop to draw but to edit my photography.