Try these:
1) Update drivers, Windows updates, DirectX Web installer (may be missing some parts), and latest version of Visual C++
2) Make sure under Power Management in Windows you're running in High Performance. Also set a high performance profile under Nvidia Control Center
3) Use the OpenGL backend on one of the latest dev builds, as it is faster than D3D. In the dev builds, there are some OpenGL 4.4 enhancements that speed it up like the Vertex Streaming Hack did. The current dev build is 4.0-804
Make sure you have the latest Nvidia Drivers, 332.21 or 334.67 beta
Downloads for #1
1) Update drivers, Windows updates, DirectX Web installer (may be missing some parts), and latest version of Visual C++
2) Make sure under Power Management in Windows you're running in High Performance. Also set a high performance profile under Nvidia Control Center
3) Use the OpenGL backend on one of the latest dev builds, as it is faster than D3D. In the dev builds, there are some OpenGL 4.4 enhancements that speed it up like the Vertex Streaming Hack did. The current dev build is 4.0-804
Make sure you have the latest Nvidia Drivers, 332.21 or 334.67 beta
Downloads for #1
Spoiler: (Show Spoiler)

