yes you are right @Samfisher, i don't need it but i would like it,
one example is when i am running a game on my primary display and also have a youtube video on the secondary, due to the difference in refresh rates the youtube video has what i would describe as aggressive screen tearing which effects my viewing experience,
it is just an idea i was bouncing around in my head, i have also considered setting up a second ultra low power computer like a NUC and using VNC to remote access it to run my media from that, but a all incorporated solution would be ideal