VSync Dropping Frame Rate Excessively On Multi-Monitors


06-01-2011 13:05:48

I have 2 identical monitors attached to my Radeon 5850. With no scene, just some Miyagi stuff, without VSync I get ~180fps when running fullscreen on either monitor (dragging the window between screens). If you turn on VSync I get 60fps on the first monitor, then I drag across to the second monitor and only get 30fps when fullscreen (I occasionally get 60fps when not fullscreen, but still fairly large). If I drag back to monitor 1, then I generally get 60fps again (although not always).

Does anyone know why it's limiting the frame rate to 30fps when it could easily do the 60fps of my monitor and know of a way to fix this?