Thank you for using our online Answers Forum. That's a great question! The video quality all depends on how fast your network speed is. When using a Mobile Hotspot, the network speed is often quite lower than when using an actual WiFi connection from a wireless router. With whatever device you are using the Mobile Hotspot for a connection, you can test the network speed by going to speedtest.net. Below are the network requirements for our three latest models. If you are getting anything under the minumim bandwidth requirements for your Slingbox, you can experience video quality issues. Please, see the Minimum Network Bandwidth section of the articles below.
Hope this Helps!
The Sling Moderation Team