I have recently acquired a new laptop Alienware R14 R2 with stock Windows 8. After installation there was all OK, but after updates and a few days Explorer is sluggish. When selecting a file to copy hourglass comes up, rather often this is happening. I need to wait a while to proceed, like 5 seconds at times. I am sure the performance generally is bad, though with the Explorer it's easy to see. Stock Windows is 8, after the updates it's now 8.1. Thinking an update screwed it up, either Windows or Nvidia but have no way of knowing how to fix it.