A new version of GeForce Tweak Utility has just been released version v3.2t11 Beta!

Whats new in GTU3.2t11:

added OpenGL PreRenderLimit setting ("Render no more frames ahead than")
changed OpenGL layout (not yet optimized for driver versions below 11.xx)
added DirectX Texture Format settings
renamed ZCullEnable setting to "Enable Z-Occlusion-Culling / Hidden Surface Removal" (only visible with driver version between 20.xx and 22.xx)

Download GeForce Tweak Utility v3.2t11