Hybrid is not using 100% CPU

[Selur]

I don't think you can do anything about the gpu usage, but increasing cpu usage might be possible, but it might not increase the encoding speed at all, since I suspect something in the process chain simply is bottlenecking the rest.

First thing you can do is try to figure out whether the bottleneck is the Vapoursynth script (probably) or the encoder.
Try the following:

• start Hybrid
  
• load your source
  
• do your setting
  
• check the Vapoursynth Preview
  
• Assuming it worked correctly, close the 'Vapoursynth Preview', press 'Show Vapoursynth Script' and copy its content.
  
• Create a text file, name it test.vpy and copy the content from above into it. (for example under "C:/Users/Michael/Desktop/test.vpy"
  
• Open a Windows Command Prompt and call:
  
  "C:\Program Files\Hybrid\64bit\Vapoursynth\vspipe.exe" "C:/Users/Michael/Desktop/test.vpy" NUL -c y4m --progress

This is just the processing of the Vapoursynth script without the encoding.
How is the speed? CPU usage?
I suspect the Vapoursynth processing isn't the problem, but x265 simply isn't that fast.

Cu Selur