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Would it better to produce a video using Intel HD Graphics and nVidia
If you are talking about nVidia Optimus setup, I couldn't get PD15 to use the dGPU at all until I completely disabled the iGPU in the BIOS. One user was able to get it to work by editing the nVidia profile file, but not something advised if you don't know what you're doing.
My desktop mobo BIOS doesn't support Optimus or MSHybrid mode and I still couldn't get multiGPU to work even though Cyberlink site says that that PD does.
As for two GPU cards in SLI or Crossfire, I have no idea if that is supported.
Intel i7 4770k, 16GB, GTX1060 3GB, Two 240GB SSD, 4TB HD, Sony HDR-TD20V 3D camcorder, Sony SLT-A65VK for still images, Windows 10 Pro, 64bit
Gary Russell -- TN USA