Problem with Sling freezing on Amazon Fire Stick. Would Roku be more compatible? Don't believe Internet speed is the issue as we can watch Amazon, Netflix with NO freezing issues for HOURS. The freezing does not seem to be impacted in a positive way by shutting down other devices that are accessing via our WiFi router
Try to do this steps. First, go to settings and look for click manage applications and find Sling TV app. Then select clear cache and clear data. You could also restart the device and relaunch the application and see if it will work.