Windows 8 displays application windows blurry/fuzzy

I first noticed that my eyes were getting tired faster since I installed Windows 8 due to blurriness of some windows. The issue was with DPI scaling. Windows assume that when you have a small display but a high resolution you automatically want to scale everything. I noticed that if you have a 27“ screen with the 1080p resolution, this problem does not appear because DPI is not high enough. But I don't know what is the threshold for this.

For any program that gives you blurry font, use the following steps:

Right-click on the program's icon and open Properties

Go to Compatibility tab and tick the “Disable display scaling on high DPI settings” checkbox.

Then close the program and restart.

If you don't want to do this for every single application that is blurry, simply right-click on the desktop and open 'Screen resolution'. Now click on 'Make text and other items larger or smaller' and select 'Smaller 100%'

Also check out this link.