Are you the only one using the internet in your household ?
Is it the same for you when you download at a different time or day ?
Have you tried restarting your router & computer and then trying to see if it makes a difference?
Are you on a wireless connection if so worth getting ethernet cable and directly connecting.
I am not a computer whizz but that's what i do, and you could even contact your internet service provider to see if there is anything they could do to help maybe?
For me the internet speed for Em8er site is good i have not experienced any issues personally.
Hope you can get it resolved