Do I need to configure CUDA in my graphics card for using CUDA support in Pinnacle studio?
If CUDA is supported by your graphics card it should be enabled by default.

To confirm:


Open NVIDIA Control Panel.
Check that CUDA is enabled in global settings.





Check Application specific settings. Make sure that Pinnacle Studio is selected in the drop down list (where I have Chrome in my example screenshot) 
Then make sure Pinncale uses global settings, or directly enable CUDA
finally check if Pinnacle has it's own CUDA settings (I don't know about that.)
if you have still problems, you should contact Pinnacle support