I also have the screen tearing issue in the latest cutting edge build. VSync, however, works fine for me but since I can't really play with that delay I will probably just go back to the stable build until the issue is fixed.
OS: Windows 7 SP1 x64
CPU: AMD FX-8320 (8 cores @3.50 GHz)
GPU: Nvidia GTX-660
Screen: Acer S242HL 60Hz (Playing fullscreen, 1920x1080)
OS: Windows 7 SP1 x64
CPU: AMD FX-8320 (8 cores @3.50 GHz)
GPU: Nvidia GTX-660
Screen: Acer S242HL 60Hz (Playing fullscreen, 1920x1080)