NVEnc --avhw fps issue

[Dan64]

Hello Selur,

  rigaya closed the issue https://github.com/rigaya/NVEnc/issues/653
  she is unwilling to fix the issue and the only solution proposed is to remove "--fps" when is used with "--avhw"
  so you should manage this situation in Hybrid.
  Please at least provide an option to remove "--fps" in NVenc when is enabled NVEnc->Hardware->Only use encoder.

Thanks,
Dan