Nvidia has released an official Windows 10 driver for its DX10/10.1 GPUs.
http://www.geforce.com/drivers/results/87988
http://www.geforce.com/drivers/results/87988
It won't be back and older drivers have known security vulnerabilities that is fixed with the latest 341.xx drivers. Cyberlink asking users to revert to older drivers is really irresponsible & unacceptable.Because of its improved performance and quality, NVIDIA is focusing all future video encoding development on NVENC, which is the dedicated encoding hardware engine first added in Kepler family of GPUs. NVIDIA no longer supports NVCUVENC, which was the CUDA-based video encoder library. NVENC is replacing the earlier CUDA software-based NVCUVENC driver module. On Quadro and Tesla, 341.05 is the last driver to support NVCUVENC. NVCUVENC will not be available with GeForce after R337.