As of today on my virgin fibre 500, my download is 530mb but my upload is only 9mb , iy is usually 30mb-33mb !!
I CANNOT STEAM MY PC AT THIS SPEED!!
Killing everyone latency trying to upload 4K Steaming, in NVIDIA shield you got YouTube at 1080p 60FPS at 9Mb Ultra and Twitch at 1080p 60FPS at 6Mb and looks good I think you should turn down the bit rate.