title: Kurento emiting hanging video frames while using composite element
body: <p>I'm using composite element to send audio stream and screen share video stream to all connected user. When I'm emitting only audio it is working fine but when i'm trying to emit screen share video stream through composite element the video get hanged after some time or if video continues to running frame are coming too late (the delay would be in minutes). </p>
  
  <p>Is it a good idea to use composite element in sending video streams of screen share as I have read in the answer of my previous question regarding composite element/ mixing media stream that using mixing media streams would toll to CPU usage as some processing is involved in mixing media stream?</p>