Desktop icons of PB 12.5.2 executables

Hello,

I have a PB application with an icon (.ico file) having 16x16, 32x32, 48x48 and 256x256 images inside. I have correctly set up in the application object and put it in my PBR file.

I build my application and obtain the exe file, say dummy.exe.

Now, if I put a link on my desktop to dummy.exe the icon I see is low quality, as if Windows upscales the 16x16 or the 32x32 ones.

The strange thing is that if I then change the link icon (by selecting Properties > Change Icon) to point to the original ICO file, I see it in high quality.

Is that a PB limit or a Windows one?

Does anybody know how to build the .ico file to obtain best quality when I put a link of my app on the desktop?

Thank you very much

Luca

Environment:

PB 12.5.2 Build 5789

Windows 8.1