Raster images look blurry at 100% on HiDPI screens
Raster images look blurry on screens where scaling is set to 2x or more.
This happens because EoG scales the images automatically to respect the display scale, even if the zoom reported by the app is supposed to be at 100% (i.e. native size). On a display with 2x scaling this causes the same effect as zooming an image to 200% on a regular display.
I believe EoG should ignore the display scaling for its content and always show images at their native resolution. This would cause images to appear crisp when initially loaded, and the zoom factor would be more representative of the truth.