NVIDIA tearing issue

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http://chakra-project.org – Hi there,I have a very strange tearing issue on my desktop when using the official closed-source NVIDIA driver. I have activated Sync to VBlank in nvidia-settings, set the image quality to High and added both __GL_SYNC_DISPLAY_DEVICE and  __GL_SYNC_TO_VBLANK variables to my environment. This should prevent any tearing according to the Internet(TM).in my KDE system settings I have enabled tearing prevention as well (set to automatic), but the screen still tears.All this is very strange already, but it becomes even weirder. The compositing type is set to OpenGL 3.1. When I set it to OpenGL (HowTos)