Thank you for posting to the Forums. Based on the information that you have provided, it does seem to be an issue with HDCP (High-bandwidth Digital Copy Protection). This can occur at any time, even if the Slingbox has been streaming programming perfectly normal for months. Here are some articles that will assist you when dealing with this issue.
- Using an HDMI video source with the Slingbox 500
- When I connect my set-top box to my TV with HDMI connections, I can't stream video at all using any version of SlingPlayer. Why?
I also noticed that you said that your network speed drops drastically. Take a look at the articles below, they will provide more information on this subject. You can also use Speedtest.net to check your network speeds, when the bandwidth drops.
If you have any questions, just reply back to the post.
Hope this helps,
Answers Forums Moderation Team