Running on Windows 8.1 with an i7 processor and 16Gb of RAM with Nvidia Graphics card.
When I try to Refine Edge Photoshop starts using up to 20% of CPU and after about 30 seconds reports as "Not Responding". Waiting does no good so eventually have to kill the application in Task Manager.
Additional information rather than a solution. Exactly the same problem occurs on my desktop rather than my laptop - the only significant difference between the 2 machines is that the desktop has only 8Gb of Memory. Problem still remains if I use a Wacom Bamboo tablet rather than a Wacom Intuos Pro. In all cases Windows 8.1 has all the latest updates - Photoshop CC has all the latest updates - Wacom drivers are the latest available.
THIS HAS BECOME A MAJOR PROBLEM AS "REFINE EDGE" IS NOW UNUSABLE!