I am providing this post for informational purposes only. In my previous post on this: https://communities.intel.com/message/435024#435024 I mentioned having problems with graphics quality in the Asus X556UA.
I recently went through updating the driver in Windows 10, Control Panel > Device Manager > Display adapters > Intel HD Graphics 520 > Update driver. It updated to driver version 188.8.131.5227. The results are now better with no visible blurring on my screen so just to say thank you, Intel.