I faced an issue, that Windows 10 desktop icons width become too large and only one icon was appearing on the screen, I tried every method and option I know in the GUI but it was not fixed, finally the fix was done through the registry key:

HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics

I updated the [IconSpacing, IconVerticalSpacing] and set them to -1125

then I signed out and signed in again