Netflix recommends 5 MBps for streaming HD. Internet Connection Speed Recommendations That is for 1 user on the network. For you, the important speeds will be upload speed from your primary residence and then download speed at your vacation home. So, with 6 MBps, you are meeting the minimum requirement. Realistically, you may experience some buffering. Even on a LAN, I randomly receive Buffering messages on Roku, but that's probably just a bug in the software... I can't imagine it's not sufficient. The best I could suggest would be to use the signal quality tools in the Slingplayer to see what it thinks. Also, use SpeedTest to check your speeds and see if you get consistent numbers. Good luck.