How to simultaneously use cpu and igpu for decoding?

[hainesb]

I actually figured it out on my own. Pretty dumb noobie move, had to change video processing to qsv on the base tab LOL. woops. But anyway, are you saying that if I chose prefer ffmpeg under config>input>decoding, that it overrides all the settings I chose under vapoursynth? Because I decoded multiple videos using that option, and it took hours. Really dont want to have to do it all over again.