Camstudio attacked my Framerates

[Cherokee_6]

Hello All,

I recently tried to make video of a flight using Camstudio 2.0.
When I am recording the flight, my framerates drop right down to 4 fps!!
Is there a certain setting that you need to have to get this work properly?

I have a 2 gig, 256 ram, 64 meg vid card.

Or are there any tutorials on how this is supposed to be done?

Thanks