I recently upgraded to a Slingbox 500 and I have now noticed that the bitrate never makes it past 1000 kbps and fluctuates very badly causing the screen to go blank and then back on again. Everything has been set up correctly back in the U.S. The slingbox is connected via HDMI to a new DirectTV Genie. The old slingbox I had would have great speeds of over 2000 kbps, but it wasn't HD compaptible and that's the reason for the 500. Does anyone have any ideas what could be causing this?