Sorry to hear you're having an issue with your audio when trying to stream with your Slingbox. There are a few different things that can cause poor audio when streaming your Slingbox. Internet speeds play an important part in your video and audio streaming. I see that you stated you're speeds are over " mbs" but what you want to focus on is the upload speed at the Slingbox location and the download speed at the remote location. At the Slingbox location you want your upload speed to be at least at 2.0 Mbps or higher. When at the remote location you want the download speeds to be at 2.0 Mbps or higher as well. Please see the link below for more information.
I would also like to know if you're getting the choppy video on more than one device? What type of devices are you trying to view from? Is it at the Slingbox location as well as a remote location? How do you have your Slingbox connected to your set top box?
If you're still having this issue, please respond with answers to the above questions or if you have any other questions please feel free to respond to this reply.
Sling Moderation Team