Hi CS,
I get anything between 15 and 22FPS depending on the actual mission. This produces a good non-jerky motion so I am very happy with it. I am really no expert so my feeling is:- "If it aint broke, why fix it?" I could, therefore, not comment on the one you have shown us.
I attach my DxDiag so you can see that my set up is not wildly expensive.