I've turned vertical sync and triple buffering on via the Nvidia control panel for my GTX 760, and now the fps under the Sims 3 says it's holding stable at 60. But I noticed on the 4th level of my houseboat, there are now floating frozen artifacts hovering in the frame. Namely, there's one end table that seems to be floating in 4 places around the screen. I tried deleting the cache files and restarting, but I still see the same thing. I've also tried the adaptive vertical sync option instead of forcing vertical sync on. Does anyone know why this may be happening? Thank you!