[vtkusers] huge speed difference between on-screen and off-screen rendering

[Schaap, J.A. (LKEB)]

Hi gurus,

I'm using both the vtkWin32OpenGLRenderWindow and the vtkWin32OffscreenRenderWindow in my applications. I noticed however a huge speed difference between these two different render methods. Did 
anybody else notice this, and does anybody know a solution to speed-up the offscreen rendering?

Thanks, Jorrit

PS: my platform is Win2000 Professional, 512MB, GeForce3, Pentium III 800MHz