Doesn't that like record in the background and not affect gameplay at all?
Yeah I didn't even think about that
But we don't know if OP has an Nvidia 600+ card
Yeah, shadowplay runs directly off the gpu, it has a negligable (a couple FPS), if any, affect on performance
It's still in beta tho and has fairly limited features, and last time I used it, it only worked with full screen games. Seems really promising though