Have you gotten solution for this? I'm experiencing the same
Haven´t encountered any more artifacts- RMA fixed it.
But about the FS compatibility- it´s still just plain awful .
Couldn´t get it working with Dishonored 2 at all, awful tearing appeared after I finally managed to switch it on. The thing is Fraps shows dips to 34 FPS but monitor doesn´t follow it- something messed up.
In other games(mainly NFS 2013) can´t get it to work often. Sometimes FS switches ON. But sometimes I have to restart PC, turn FS on in CCC, turn OFF in CCC, turn monitor ON\OFF. Turn FS ON\OFF in monitor settings and repeat all the steps. Quite frankly getting annoyed of this so called "feature" which works only 1 time in 10.