From ooVoo you can also manually adjust the amount of bandwidth and computer resources being used. From your ooVoo interface go to: File/ooVoo>Settings>Video Calls. Go to Screen Sharing Settings and select the '0.5 frames per second' setting to use less computer resources and Internet bandwidth.
During video calls, a minimum of 180KB of available bandwidth is required for the upload and 150KB per window required for the download (including the audio and video). For each video pane that is added to the video conversation, more download bandwidth is required (to download the video on the other participants’ side). The video quality depends on the available bandwidth the users have. If there is more available bandwidth, then the video quality will be better.