It appears that Intel is working on a fix for this and other graphical/audio issues, but is not fully there yet. I suggest, if it was working for you, that you reinstall the 4664 version of the driver. Here is link to old version: Download Intel® Graphics Driver for Windows* [15.45]. Then, try the updates that Intel releases until all of your issues are addressed (If not, go back to this old one again)...
Hope this helps,