Question How to identify bottlenecks on my network

[Shannon_24]

I have recently purchased a Vodafone TV which is a media box running Android. I am getting poor video quality when streaming even though I have 50MB/10MB internet connection.
The device is hard wired via cat5 cable into the router.

I ran a speed test on my mobile phone which is connected to the same router via WiFi and I got an average of 30MB download.
I then ran the same test from the Vodafone TC device (hard wired) and I am only getting 10MB

The device is android and is designed for video streaming so not sure why it would limit itself?

I dont know where to go - the device retailer doesn't offer any support so I want to know if there are any tests I can do to further confirm or identify the cause of the issue...

 

[jsmithepa]

What are the other people in the house doing? Only this TV have problem? Desktop? Laptop? Smartphone?

 

[Shannon_24]

What are the other people in the house doing? Only this TV have problem? Desktop? Laptop? Smartphone?

There is noone else in the house.
It is only this device which is used for video streaming as its sole purpose