hi - encoding really slow

[hbb]

Thanks . I will  have time to do some testing this weekend and report. 
I upgraded to 2018.02.03.3 seem to break HDR patching.

Matrix coefficients                     
Mastering display color primaries  

  
Above works and Below are not writting even those its patched

Mastering display luminance             
Maximum Content Light Level        
Maximum Frame-Average Light Level   

 

 Please add HDR patching to Nvenc ffmpeg and more Preset instead of HQ only.
sorry for confusion but dxva2 and d3d11va works but no HDR patching on ffmpeg.
next is to try DGDecNV and see if the speed is better