Everything in Windows looks blurry I have a MacBook Pro (17-inch, Late 2011) with OS X El Capitan. I just installed the trial version of Parallels Desktop 11.1.2 for Mac Business Edition, Parallels tools, and Windows 7 x32 bit in english.

The resolution of my Mac is 1920*1200. I have set the resolution of Windows to be 1600*1000 to occupy the whole screen. The problem is everything in Windows (e.g., fonts, texts, images) looks a little bit blurry, at least not as clear as Mac. This does not change with other resolution of Windows.

Does anyone know how to fix this problem?

PS: after 1 hour looking at the blurry Windows, I feel already dizzy...

Edit 1: I take two screenshots (one from Mac, the other one from Windows; both of them under 1920*1200) to show the difference:
You shouldn't be setting the resolution of Windows in Parallels.

Boot Windows and choose Virtual Machine → Install Parallels Tools and follow the instructions. This sets the resolution automatically according to the window dimensions.

If Parallels Tools doesn't set the right resolution in full screen, in Configuration set Full Screen: Scale to fit screen to Auto.