I am a full year subscribed creative cloud member. With Photoshop CC; whenever I use the pen tool the art board flickers black non-stop making doing anything with that tool nearly impossible. Does anybody have this problem? It's not my graphics card. My old Photoshop 7 was better thast this!
You should check with your Graphics card maker for the latest driver updates and make sure CC is updated to 14.2
If you have no luck there, go into Photoshop's Preferences > Performance and uncheck "Use Graphics Processor" to see if the problem goes away.
Photoshop 14 (CC) is way harder on the graphics than 7 which is 10 years old.