Nvidia GeForce GTX 1660 super and LG 65NANO953NA 8K resolution troubles

[ToastyX]

I honestly don't know how you did it because if the GPU supported 8K with HDMI, it would have worked out of the box without any tweaking.

In the NVIDIA control panel in the "Change resolution" section, make sure the color depth is set to 8 bpc. Then check if the YCbCr 4:2:0 color format is available.

If not, try importing this:
  LG-8K-2.0.bin (Size: 256 bytes / Downloads: 209)
That's with the HDMI 2.1 stuff removed. If that doesn't work, then I have no idea.