I have the Slingbox Pro hd & I've been having issues with a steady connection over 4g lte. It gets up to around 1440 kbs then skips & starts dropping down to 800 kbs down to 30kbs until it freezes & stops. I have a steady connection with my home wifi. I tried everything I can including setting my Slingbox back to factory default & reconfigue the inputs. Seems like Sling needs to.update the software.
The Slingbox Forum Moderation Team
P.S. Since cellular network speeds vary significantly depending on time and location, you'll want to test those speeds precisely when you're experiencing those quality issues.