I have a 9000 kbps download speed and approximately 8000 kbps upstream where my slingbox is located. According to speedtest.net and pingtest.net both locations have A quality lines. However when starting the slingbox the stream is usually around 1500 kbps - maxing at approximately 3000. Why does it not use the full speed? What can I set up myself in order to turn up the speed?