So I have always had a pc working with serato but I have never been successful recording my sets from the PC side.. I tried this freeware screen recording software and it worked great..
obsproject.com

as for the pc my only issues is some videos don't center once i figure that out i will be pretty happy with serato if only they could get their recording software down. yes i have a mac book pro with mix emergency,,, my pc laptop cpu never gets above 30 percent with the video plug in and both videos playing.