Yesterday I had my MRV, cinema plus and new HD DVR for 3d installed by Directtv. When the guy hooked everything up my internet speed almost went to half. On my speed test it went from 3.90 to 1.80. He said he didn't know much about the internet. After he left I called directtv and they said that the swim ? and the other hook up should not have any effect on my download speed. BTW I purchased a router which I did not have for this. I know nothing about this kind of stuff so I thought I would come here for answers.