Good clues.

But I didn't read what channel the router is on as well as if the ethernet cable test was done. And again, when we setup these WiFi connections we have the WiFi router at under 20 feet away.

There are a lot of reasons for the low speed score and .. again .. this is not a laptop. It's a device and we've covered many of the device oddities over the years in the CNET Networking Forum. I'd like to see if any of our findings can help but some folk think this is a Samsung only issue. Sadly it's not.
Bob