Hi guys - I finally thought I had my system running butter smooth 100% after an hour+ of beautiful bf4 play / Metro LL runs & Ungine heaven benches. However - I've come back to the PC & sat down and noticed a distinct timely lag or interference with the system. It is noticeable when running the courser across the desktop. I've got 120hz monitor so its very noticeable and seems to "skip a beat" every 1 second of so. Now once I load up a BF4 game it is even more noticeable and moving is horribly jumpy! I go into CCC and disable xfire and it's back to buttersmooth - go to re-enable it and then still buttersmooth. So it's like a very strange intermittent lag that randomly kicks in for some reason until I disable/re-enable my xfire in CCC. Does anyone has have this issue or can shed any light on it?