E1914H, Why is resolution so poor?

Hello. Have Dell E1914H monitor. It's set to the recommended 1366x768. The screen is blurry. Also, it's almost like you can see the pixels on the desktop. I had the Dell N1910N w/ Windows 7 and I wasn't having these problems. I have Windows 8.1 and Dell XPS 8700. Is there a solution to this problem short of buying a better monitor. Thanks.