So let's see... if cfkillers runs the suggested speed test on the Hopper 3 and the download speed is reasonable, then it would be up to Dish to determine what the problem is, right? I played around with requesting a free Dish on-demand 4k title and immediately got the Insufficient Bandwidth message. It's like it doesn't even try before issuing the message. I have 25Mbps service. Funny thing is, here is Dish's own web page stating that a minimum speed for 4K IP VOD content is 10Mbps (line 7). Many of us should be golden if requesting such content, it would seem.
https://my.dish.com/support/general-speed-size