290x crossfire trouble

[Hamateer]

Just got a second 290x off ebay to xfire with my unlocked 290. Problem is im getting massive stutter/frame jumping, see attached screenshot... if i disable crossfire in control panel it runs fine again...

http://i.imgur.com/NZernPf.jpg

 

[Spazturtle]

Check each card separately.

 

[Hamateer]

new card runs fine on its own in the primary slot.

 

[Hamateer]

disabling overdrive fixed it