Okay, I plopped in my second 7970 a couple days ago and immediately ran into an issue with v-sync when I loaded up BF3. On a single-GPU, I have no issue with v-sync. I get FPS from 0 to 60. Though with Xfire, I immediately get 30 / 31 FPS locked with V-sync. If I turn off v-sync I get 65 FPS (I have that as my frame limit). It's very smooth at without v-sync, but when there's flashing or the frame rate fluctuates, I get tearing. Massive tearing. The weird part is that I average 60+ FPS at almost all times. So I wouldn't think the v-sync FPS halving would effect me. Ideas?