Strange Pixel Grid Appearing on Image

[CLR5C0C]

Hello, I have been using Photoshop for a while, and this has never happened to me before. When I opened my image, it suddenly appeared with all those strange things around the stars and edges. From afar it looks like a bad super-sharpening, but getting close I saw it looked like a pixelated grid or sort of. I tried disabling "Pixel Grid", and the normal grid went away, but this one did not.

This is weird because it is happening only on Photoshop, when I open the image on Window's "Photos" for example, it looks just fine.

Any ideas on why that might be happening?

[Bojan Živković]

When viewing image at 100% view do you see any problem mentioned? Press Ctrl/Cmd + 1 for 100% magnification level.

[CLR5C0C]

Yes, it still seems to be there at any magnification level...