Blurry images (program DPI awareness & windows scaling issue)

[astasters]

Bug description

Images & videos are blurry on a 4k ~160 PPI monitor with windows scaling set at 150%
The image seems to get stretched, adding fuzziness blur

1. A hack-ish solution would be to add a optional setting that forces windows scaling to 100%.

chatgpt reply:

Since you have a 4K screen at 150% scaling, Windows is likely scaling raster images improperly. This means that:
The app is rendering images at 100% scale, but Windows upscales them.
Instead of keeping the full resolution, Windows blurs them due to how it handles scaling for certain applications.
If the app isn’t explicitly DPI-aware, Windows forces bitmap scaling instead of vector scaling, which results in blurry images.

Steps to reproduce

2. How to reproduce:

• set windows scaling to 100%
• look up absurdres image using gelbooru
• compare it to the image of 150%
• The 100% image shows the full resolution
• 150% is zoomed in and blurry

This is on a 4k display. you can also simulate 4k on any screen with following steps:
Nvidia control panel:
Manage 3D settings -> DSR factors -> DL scaling

Google the amd equivalent

Screenshots

(first image) Left is 4k, 100% windows scaling 163 PPI
(second image) Right is 4k, 150% windows scaling 163 PPI

Then, this image comes from phone camera. Left 4k 100% scaling, Right 4k 150% scaling

System information

• OS: windows 11
• Grabber version: 7.13.0

Additional context

3. Side note:
   I'm running two monitors, one 1440p 16:9, other 4k 16:9, same refresh rate, 10-bit, same monitor size, just different PPI.

Whenever I drag the image to the 1440p monitor, the blur is immediately removed. Its windows scaling 100%. while 4k screen is 150%