So I have V-Sync ON in-game, with FPS cap set to 30.
However, on my MSI 7850 to HDTV via HDMI, I have a horrible horizontal line.
The line is always in the same place, at least until the game is restarted, but I'll have to research more to verify if that even changes it.
It looks a lot like a V-sync tear, but I'm not sure if V-sync isn't working or if it's a problem with the graphics card, possibly related to the fact that I duplicate my screen to a DVI monitor as well. It does keep happening once switching to just the one screen though.