I asked this from NVIDIA:
As for now to play UHD Blu-rays on a computer the motherboard and CPU (Kaby Lake) must be SGX (Software Guard Extension) must enabled on these devices. HDMI 2.0 and AACS 2.2 must also be implemented, but that goes with out saying. The problem is that one is forced to use the on-board graphics in the Kaby Lake processor (630) and that's not very good, I would like to use a dedicated video card. What will it take to use a Pascal card to watch UHD Blu-rays ? Does it have to be implemented in the hardware or a driver update. When will this come about ?
Here's their answer:
Thank you for contacting NVIDIA Customer Care.
My name is Jeff, and I will be working with you to address your concerns as quickly as possible.
From the description, I understand that while using UHD blue rays you are forced to use on board graphics card.
I apologize for any inconvenience this may have caused.
Please follow the steps to install the latest driver
Download the latest driver
http://www.nvidia.com/download/driverResults.aspx/115492/en-us
- Once the installer wizard begin, accept the license agreement.
- Select "Custom (Advanced)" install option and then click Next.
- Put a checkmark in the "Perform clean install" option and then click Next.
- Follow the on-screen instructions to complete the installation.
- Restart the computer
Please follow the below steps to see if this helps to fix the issue.
NVIDIA Control Panel -> from the NVIDIA Control Panel, select the "Manage 3D settings" from the left column -> click on the Power management mode drop down box and select "Prefer Maximum Performance". Click over the "Apply" button at the bottom of the panel to apply the changes.
Please take your time and get back to me at your earliest convenience. If there are any questions or concerns, feel free to contact me.
I look forward to your reply.
Best Regards,
Jeff
NVIDIA Customer Care
It's hard to tell if the guy is just giving a generic answer or if their is actually an update that will allow the use of a dedicated video card ???