Sling Media is aware of the issue with viewing through the Chromecast, and our engineers are working on a resolution. We will post the solution to all of the Chromecast related Community threads as soon as it becomes available, as well as posting a "What's New" recap on our website.
Thank you for your patience while we address this concern.
Sling Media Moderator Team
My slingbox M1 works great unless I use it with Chromecast. With the Chromecast I get constant buffering. Sling support told me to open a port which I tried and it did not solve the problem. The Chromecast is unusable as it is so how can Sling announce that they have support for Chromecast? Is their a fix for this?