The requirements to enable Netflix UHD playback, as per NVIDIA, are so:

• NVIDIA Driver version exclusively provided via Microsoft Windows Insider Program (currently 381.74).
• No other GeForce driver will support this functionality at this time
• If you are not currently registered for WIP, follow this link for instructions to join: https://insider.windows.com/
• NVIDIA Pascal based GPU, GeForce GTX 1050 or greater with minimum 3GB memory
• HDCP 2.2 capable monitor(s). Please see the additional section below if you are using multiple monitors and/or multiple GPUs.
• Microsoft Edge browser or Netflix app from the Windows Store
• Approximately 25Mbps (or faster) internet connection.

Each time as I see HDCP 2.2 I laugh.
100% of UHD content can be recorded via protection stripper.