I have a HP DL380e G8 with a standard Matrox G200eh and an additional Nvidia Quadra 4000 graphic card.
Can Netcam studio use the extra graphic card even if it not set as the primary graphic card in bios?
The Windows OS must be able to address the Nvidia card with the correct driver. Check the Device Manager if the Nvidia card is listed. If listed install latest driver and then you can use the Nvidia control panel and select that NCS X and NCS Service use the Nvidia card.
So as usual test what works.