I have read your post and your rant and would like to state that you post is totally false and misrepresenting the facts, , No one in the branch would have advised you that the unit can stream HD content especially on a entry level media player.
We would like to clarify that the AC Ryan Essential Media Player you purchased is an entry-level media player, this unit is designed to upload and view movies, photos, music etc. to view on your PC or via your Television set connected with the supplied cables.
This unit was not designed to stream HD movies via wireless and as far as we can see, nowhere on the box or user manual does nor on the suppliers website does it mentioned streaming of HD content via wireless.
We have tested the unit and it works perfectly for the purpose for which it was designed and there is no fault found on the unit.
Additionally we would also like to clarify that no matter what other brand media player you purchase, the streaming of HD content wirelessly will not work appropriately due to the low bandwidth latency by your access points and wireless dongle. We therefore suggest you purchase a media player that has a wired LAN RJ-45 and rather connect that unit to a wired connection of at least 1000mbps for HD streaming.
The AC Ryan Essential unit was never designed for that purpose as it does not have a LAN port. alternatively, you can connect the device directly through USB to view HD content.
This issue is well documented on the internet on various technical sites.
http://www.tomshardware.com/forum/39483-42-decent-wireless-router-video-streaming#.
http://mybroadband.co.za/vb/showthread.php/347372-Media-player-WIFI
http://community.wd.com/t5/WD-TV-Live-Live-Plus/Streaming-HD-Video-over-WiFi-problems/td-p/285088
http://www.techhelpfox.com/8137274/Streaming-Hd-Content-Via-Wifi