I've only just recently gotten my M14x and I noticed 2 problems with it.

First, occasionally my screen will start to become really slow and i could hear buzzing sounds from my headphones for a couple of seconds before things returned to normal, this is really annoying while I'm playing game and watching videos.

Second, the Fast Access loads real slow at the login page after I had updated its software which it promoted me to. 

Would appreciate any help, thanks!