Quasi quasi riprovo ad attivarlo... e imposto l'opzione su Messenger e Windows Mail... ci penso su...
If you happen to be using one of these applications that are not DPI aware and the application is being noticeably stretched, you can tell Windows to disable display scaling for the application. Here’s how: Find the application executable and open its property pages. Open the Compatibility tab and check the “Disable display scaling…” option. A good example of an app that is *not* DPI aware is Windows Live Messenger.
Fonte: Window Clippings is now DPI Aware