[Asmodian]

Interesting, it does seem like NGU has improved on Polaris.

My Pascal Titan X doesn't do that much better at NGU Sharp very high 1080p -> 2160p.

These are the rendering times for the NGU step by itself (ShowRenderSteps). If you disable subtitles and smooth motion you can see it reported by itself, the times weren't quite the same when it was mixed into another line. I used chroma doubling set to normal (Bicubic 60). madVR v0.91.9 of course, DX11 fullscreen windowed, Win10 w/ creators update, Nvidia driver version 382.05. I added image enhancements and changed chroma upscaling to keep the GPU clocks up. The GPU was at 1860 MHz unless otherwise noted.

NGU Sharp (low): 1.7 ms
NGU Sharp (med): 2.6 ms
NGU Sharp (high): 5.2 ms
NGU Sharp (very high): 16.8 ms

edit:
I remember NNEDI3 differences being interesting too:
NNEDI3 32: 4.18 ms
NNEDI3 64: 7.54 ms
NNEDI3 128: 18.83 ms
NNEDI3 256: 32.93 ms (1835 MHz)