NVIDIA has made a quiet yet significant update to its consumer GeForce graphics processing units (GPUs) by removing video encoding limitations. These GPUs can now encode up to five simultaneous stream... NVIDIA Removes Encoding Limitations on Consumer GPUs Allowing up to 5 Simultaneous Streams
And here are some guys on github , releasing patches to remove any limitation https://github.com/keylase/nvidia-patch/tree/master/win
