FaceTime Pauses

Hi All,

I'm wondering if you can help me with an issue i'm having.

When I'm in a FaceTime call on my mac and then I switch to a full screen app, or even another desktop, my video pauses for the other person. I understand this happened on the iPhone/iPad when you switch to another app and it kind of makes sense there but is this what is doing on the mac? Saving power? Is there anyway to stop it pausing the video whilst I multitask?