Thanks for using our answers forums. We are sorry to hear that you are having issues with the video at a remote location. If all is working properly at the Slingbox location, it sounds like it may be an issue with the upload speed at the Slingbox location. The upload speed is equally important as the download speed where you are viewing the Slingbox. It will need to be at least 2 mbps to view in full HD quality.
Hope this helps,
The Sling Moderation Team
Thank you for utilizing our Slingbox answer forums. We are sorry for the issue you are having with the video freezing up while streaming with the iPad and Apple TV method of streaming. What you will want to check is the connection type to make sure you are streaming in a TCP connection type. You may also want to check the speeds to make sure you are getting a constant speed of 2.0mbps for upload on the network that the Slingbox is connected to. If you are not getting the speeds required you may need to contact your Internet service provider(ISP) to increase the upload speed
I would also like to provide you with the article below. These articles will help you with finding out what is causing the issue:
Sling Media Moderation Team
Ive run into the same problem with Ipad Air & Ipad 4 sending video to Apple TV via airplay. Its constantly getting hungup and/or buffering, i.e. unwatchable. My upload speed at slingbox location is over 5 mbps, with download speeds well over this. Same situation where my laptop works perfectly under the same conditions. Ive tried the various fixes recommened by Support, to no avail. Direct to Ipad video is a little better, but not by much as it buffers regularly.
I hope they address this very soon with a new software version.